SlideShare a Scribd company logo

atomic structure

•Download as PPS, PDF•
•
N
Ninth Grade

atomic structure

Science
1 of 93
AATTOOMMIICC SSTTRRUUCCTTUURREE AA gguuiiddee ffoorr GGCCSSEE ssttuuddeennttss 22001100 KKNNOOCCKKHHAARRDDYY PPUUBBLLIISSHHIINNGG SSPPEECCIIFFIICCAATTIIOONNSS
AATTOOMMIICC SSTTRRUUCCTTUURREE INTRODUCTION This Powerpoint show is one of several produced to help students understand selected GCSE Chemistry topics. It is based on the requirements of the AQA specification but is suitable for other examination boards. Individual students may use the material at home for revision purposes and it can also prove useful for classroom teaching with an interactive white board. Accompanying notes on this, and the full range of AS and A2 Chemistry topics, are available from the KNOCKHARDY SCIENCE WEBSITE at... www.knockhardy.org.uk/gcse.htm All diagrams and animations in this Powerpoint are original and created by Jonathan Hopton. Permission must be obtained for their use in any commercial work. All diagrams and animations in this Powerpoint are original and created by Jonathan Hopton. Permission must be obtained for their use in any commercial work.
AATTOOMMIICC SSTTRRUUCCTTUURREE CCOONNTTEENNTTSS • Rutherford’s experiment • Structure of atoms • Mass number and atomic number • Atoms and ions • Isotopes • Electronic structures of the first 20 elements
THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS Atoms have a small central nucleus, which is made up of protons and neutrons. Around the nucleus are the electrons. Because electrons weigh very much less than protons and neutrons, most of the mass of an atom is concentrated in its nucleus.
AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT
AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT Many scientists thought atoms were solid like a ‘plum pudding’. Ernest Rutherford wanted to find out what atoms were like.
AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT ALPHA (a) PARTICLES GOLD ATOMS Many scientists thought atoms were solid like a ‘plum pudding’. Ernest Rutherford wanted to find out what atoms were like. He fired positively charged ALPHA PARTICLES (helium nuclei) at a very thin sheet of gold and detected what happened to their path.
ALPHA (a) PARTICLES MOST WENT STRAIGHT THROUGH AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT MOST WENT STRAIGHT THROUGH MOST OF AN ATOM IS SPACE
ALPHA (a) PARTICLES SOME WERE DEFLECTED AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT SOME WERE DEFLECTED NUCLEUS IS POSITIVELY CHARGED
AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT ALPHA (a) PARTICLES VERY FEW BOUNCED STRAIGHT BACK VERY FEW BOUNCED STRAIGHT BACK NUCLEUS IS RELATIVELY SMALL
ALPHA (a) PARTICLES MOST WENT STRAIGHT THROUGH SOME WERE DEFLECTED AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT VERY FEW BOUNCED STRAIGHT BACK SUMMARY MOST WENT STRAIGHT THROUGH SOME WERE DEFLECTED MOST OF AN ATOM IS SPACE NUCLEUS IS POSITIVELY CHARGED VERY FEW BOUNCED STRAIGHT BACK NUCLEUS IS RELATIVELY SMALL
THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge PROTON NEUTRON ELECTRON Atoms have a small central nucleus, which is made up of protons and neutrons and around which there are electrons.
THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge PROTON NEUTRON ELECTRON
THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge PROTON NUCLEUS 1 +1
THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge +1 1 PROTON NEUTRON 0 1 NUCLEUS NUCLEUS
THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge PROTON NEUTRON ELECTRON +1 0 -1 1 1 Negligble ‘Very small’ NUCLEUS NUCLEUS IN SHELLS AROUND THE NUCLEUS
THE STRUCTURE OOFF AATTOOMMSS -- SSuummmmaarryy The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge PROTON NEUTRON ELECTRON +1 0 -1 1 1 Negligble ‘Very small’ NUCLEUS NUCLEUS IN SHELLS AROUND THE NUCLEUS
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus Symbol Atoms of an element are given a symbol Some have one capital letter H, N, O, P, K Some have two letters, the first He, Na, Mg Cu one being a capital Recently discovered high atomic Unh number elements have been given symbols with three letters
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus Symbol Atoms of an element are given a symbol Some have one capital letter H, N, O, P, K Some have two letters, the first He, Na, Mg Cu one being a capital Recently discovered high atomic Unh number elements have been given symbols with three letters When necessary, the atomic number and the mass number can be written alongside the symbol
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na When necessary, the atomic number and the mass number can be written alongside the symbol
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na Mass Number (A) PROTONS + NEUTRONS Atomic Number (Z) PROTONS
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na Mass Number (A) PROTONS + NEUTRONS Atomic Number (Z) PROTONS THESE ALWAYS GO TOGETHER – ANYTHING WITH 11 PROTONS MUST BE SODIUM
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na Mass Number (A) PROTONS + NEUTRONS Atomic Number (Z) PROTONS
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na Mass Number (A) PROTONS + NEUTRONS Atomic Number (Z) PROTONS THERE WILL BE 12 NEUTRONS IN THE NUCLEUS 23 – 11 = 12
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na Mass Number (A) PROTONS + NEUTRONS Atomic Number (Z) PROTONS
AATTOOMMSS AANNDD IIOONNSS
AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS
AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS PROTONS 6 11 16 17 20 ELECTRONS 6 10 16 18 18 ATOM or ION?
AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS PROTONS 6 11 16 17 20 ELECTRONS 6 10 16 18 18 ATOM or ION? ATOM ION ATOM ION ION
AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS THE CHARGE ON AN ION DEPENDS ON THE RELATIVE NUMBERS OF PROTONS AND ELECTRONS
AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS THE CHARGE ON AN ION DEPENDS ON THE RELATIVE NUMBERS OF PROTONS AND ELECTRONS MORE ELECTRONS THAN PROTONS NEGATIVE FEWER ELECTRONS THAN PROTONS POSITIVE
AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS THE CHARGE ON AN ION DEPENDS ON THE RELATIVE NUMBERS OF PROTONS AND ELECTRONS MORE ELECTRONS THAN PROTONS NEGATIVE FEWER ELECTRONS THAN PROTONS POSITIVE
AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS THE CHARGE ON AN ION DEPENDS ON THE RELATIVE NUMBERS OF PROTONS AND ELECTRONS MORE ELECTRONS THAN PROTONS NEGATIVE FEWER ELECTRONS THAN PROTONS POSITIVE PROTONS 6 11 16 17 20 ELECTRONS 6 10 16 18 18 ATOM or ION? ATOM ION ATOM ION ION CHARGE
AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS THE CHARGE ON AN ION DEPENDS ON THE RELATIVE NUMBERS OF PROTONS AND ELECTRONS MORE ELECTRONS THAN PROTONS NEGATIVE FEWER ELECTRONS THAN PROTONS POSITIVE PROTONS 6 11 16 17 20 ELECTRONS 6 10 16 18 18 ATOM or ION? ATOM ION ATOM ION ION CHARGE Neutral + Neutral - 2+
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Protons Neutrons Electrons Charge Atomic Number Mass Number Symbol A 19 21 19 B 20 0 40 C + 11 23 D 6 6 0 E 92 0 235 F 6 13 G 16 2- 16 H 27Al3+
MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Protons Neutrons Electrons Charge Atomic Number Mass Number Symbol A 19 21 19 0 19 40 40K B 20 20 20 0 20 40 40Ca C 11 12 10 + 11 23 23Na+ D 6 6 6 0 6 12 12C E 92 143 92 0 92 235 235U F 6 7 6 0 6 13 13C G 16 16 18 2- 16 32 32S2- H 13 14 10 3+ 13 27 27Al3+
IISSOOTTOOPPEESS
IISSOOTTOOPPEESS Atoms of the same element can have different numbers of neutrons. These atoms are called ISOTOPES of that element.
IISSOOTTOOPPEESS Atoms of the same element can have different numbers of neutrons. These atoms are called ISOTOPES of that element. Isotopes of an element have SAME NUMBER OF PROTONS DIFFERENT NUMBER OF NEUTRONS
IISSOOTTOOPPEESS Atoms of the same element can have different numbers of neutrons. These atoms are called ISOTOPES of that element. Isotopes of an element have SAME NUMBER OF PROTONS DIFFERENT NUMBER OF NEUTRONS or put another way SAME ATOMIC NUMBER DIFFERENT MASS NUMBER
IISSOOTTOOPPEESS Atoms of the same element can have different numbers of neutrons. These atoms are called ISOTOPES of that element. Isotopes of an element have SAME NUMBER OF PROTONS DIFFERENT NUMBER OF NEUTRONS or put another way SAME ATOMIC NUMBER DIFFERENT MASS NUMBER ISOTOPES HAVE SIMILAR CHEMICAL PROPERTIES
ISOTOPES OF HYDROGEN 1 H 1 2 H 1 IISSOOTTOOPPEESS
ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER IISSOOTTOOPPEESS
IISSOOTTOOPPEESS ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER 1 1
IISSOOTTOOPPEESS ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER 1 1 MASS NUMBER
IISSOOTTOOPPEESS ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER 1 1 MASS NUMBER 1 2 PROTONS
IISSOOTTOOPPEESS ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER 1 1 MASS NUMBER 1 2 PROTONS 1 1 NEUTRONS
IISSOOTTOOPPEESS ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER 1 1 MASS NUMBER 1 2 PROTONS 1 1 NEUTRONS 0 1
ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER MASS NUMBER PROTONS NEUTRONS IISSOOTTOOPPEESS
IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20
IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE
IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25%
IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25% RATIO
IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25% RATIO 3 : 1
IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25% RATIO 3 : 1 AVERAGE
ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25% RATIO 3 : 1 AVERAGE MASS 35 + 35 + 35 + 37 = 4 IISSOOTTOOPPEESS
ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25% RATIO 3 : 1 AVERAGE MASS 35 + 35 + 35 + 37 = 35.5 4 IISSOOTTOOPPEESS
IISSOOTTOOPPEESS ISOTOPES OF CARBON 1 2 C 6 1 3 C 6 1 4 C 6 ATOMIC NUMBER 6 6 6 MASS NUMBER 12 13 14 PROTONS 6 6 6 NEUTRONS 6 7 8
IISSOOTTOOPPEESS ISOTOPES OF CARBON 1 2 C 6 1 3 C 6 1 4 C 6 ATOMIC NUMBER 6 6 6 MASS NUMBER 12 13 14 PROTONS 6 6 6 NEUTRONS 6 7 8
AATTOOMMIICC SSTTRRUUCCTTUURREE TTHHEE AARRRRAANNGGEEMMEENNTT OOFF EELLEECCTTRROONNSS IINN AATTOOMMSS OOFF TTHHEE FFIIRRSSTT TTWWEENNTTYY EELLEEMMEENNTTSS IINN TTHHEE PPEERRIIOODDIICC TTAABBLLEE
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca + ATOMIC NUMBER 1 GROUP 1 ELECTRONIC CONFIGURATION 1 HYDROGEN • atoms have the same number of electrons as protons • electrons are found in shells (energy levels) around the nucleus • electrons are put into the lowest energy level first
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 2+ ATOMIC NUMBER 2 GROUP 0 ELECTRONIC CONFIGURATION 2 HELIUM • the innermost shell can hold up to two electrons
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 3+ ATOMIC NUMBER 3 GROUP 1 ELECTRONIC CONFIGURATION 2,1 LITHIUM • each shell (energy level) can hold a maximum number of electrons • the first one can only hold 2,so the next goes in the second shell
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 4+ ATOMIC NUMBER 4 GROUP 2 ELECTRONIC CONFIGURATION 2,2 BERYLLIUM • the second shell is gradually filled up until it has eight electrons
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 5+ ATOMIC NUMBER 5 GROUP 3 ELECTRONIC CONFIGURATION 2,3 BORON • the second shell is gradually filled up until it has eight electrons
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 6+ ATOMIC NUMBER 6 GROUP 4 ELECTRONIC CONFIGURATION 2,4 CARBON • the second shell is gradually filled up until it has eight electrons
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 7+ ATOMIC NUMBER 7 GROUP 5 ELECTRONIC CONFIGURATION 2,5 NITROGEN • the second shell is gradually filled up until it has eight electrons
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 8+ ATOMIC NUMBER 8 GROUP 6 ELECTRONIC CONFIGURATION 2,6 OXYGEN • the second shell is gradually filled up until it has eight electrons
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 9+ ATOMIC NUMBER 9 GROUP 7 ELECTRONIC CONFIGURATION 2,7 FLUORINE • the second shell is gradually filled up until it has eight electrons
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 10+ ATOMIC NUMBER 10 GROUP 0 ELECTRONIC CONFIGURATION 2,8 NEON • the second shell is now full • full outer shells are characteristic of the unreactive NOBLE GASES
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 11+ ATOMIC NUMBER 11 GROUP 1 ELECTRONIC CONFIGURATION 2,8,1 SODIUM • as the second shell is full, electrons go into the third shell • the third shell can hold up to a maximum of eight electrons
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 12+ ATOMIC NUMBER 12 GROUP 2 ELECTRONIC CONFIGURATION MAGNESIUM 2,8,2
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 13+ ATOMIC NUMBER 13 GROUP 3 ELECTRONIC CONFIGURATION 2,8,3 ALUMINIUM
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 14+ ATOMIC NUMBER 14 GROUP 4 ELECTRONIC CONFIGURATION 2,8,4 SILICON
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 15+ ATOMIC NUMBER 15 GROUP 5 ELECTRONIC CONFIGURATION PHOSPHORUS 2,8,5
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE SULPHUR (SULFUR) F Cl He Ne Ar Ca 16+ ATOMIC NUMBER 16 GROUP 6 ELECTRONIC CONFIGURATION 2,8,6
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca ATOMIC NUMBER 17 GROUP 7 ELECTRONIC CONFIGURATION 2,8,7 17+ CHLORINE
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 18+ ATOMIC NUMBER 18 GROUP 0 ELECTRONIC CONFIGURATION 2,8,8 ARGON • the third shell is now full • full outer shells are characteristic of the unreactive NOBLE GASES
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 19+ ATOMIC NUMBER 19 GROUP 1 ELECTRONIC CONFIGURATION POTASSIUM 2,8,8,1 • as the third shell is full, electrons go into the fourth shell
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 20+ ATOMIC NUMBER 20 GROUP 2 ELECTRONIC CONFIGURATION CALCIUM 2,8,8,2
AATTOOMMIICC SSTTRRUUCCTTUURREE WWHHAATT IISS IITT??
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 16+ ELECTRONS ? PROTONS ? ATOM / ION ? ELEMENT ? ANSWER ? WHAT IS IT?
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 16+ ELECTRONS 16 PROTONS 16 ATOM / ION ATOM ELEMENT SULPHUR ANSWER S WHAT IS IT?
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 19+ ELECTRONS ? PROTONS ? ATOM / ION ? ELEMENT ? ANSWER ? WHAT IS IT?
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 19+ ELECTRONS 18 PROTONS 19 ATOM / ION POSITIVE ION ELEMENT POTASSIUM ANSWER K+ WHAT IS IT?
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 17+ ELECTRONS ? PROTONS ? ATOM / ION ? ELEMENT ? ANSWER ? WHAT IS IT?
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 17+ ELECTRONS 18 PROTONS 17 ATOM / ION NEGATIVE ION ELEMENT CHLORINE ANSWER Cl¯ WHAT IS IT?
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 8+ ELECTRONS ? PROTONS ? ATOM / ION ? ELEMENT ? ANSWER ? WHAT IS IT?
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 8+ ELECTRONS 10 PROTONS 8 ATOM / ION NEGATIVE ION ELEMENT OXYGEN ANSWER O2- WHAT IS IT?
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 13+ ELECTRONS ? PROTONS ? ATOM / ION ? ELEMENT ? ANSWER ? WHAT IS IT?
H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 13+ ELECTRONS 10 PROTONS 13 ATOM / ION POSITIVE ION ELEMENT ALUMINIUM ANSWER Al3+ WHAT IS IT?
AATTOOMMIICC SSTTRRUUCCTTUURREE TTHHEE EENNDD © 22001111 JJOONNAA TTHHAANN HHOOPPTTOONN && KKNNOOCCKKHHAARRDDYY PPUUBBLLIISSHHIINNGG

Recommended

Atomic Structure and the Periodic Table
Atomic Structure and the Periodic TableAtomic Structure and the Periodic Table
Atomic Structure and the Periodic Table
Paul Schumann
 
Structure of atom ppt
Structure of atom pptStructure of atom ppt
Structure of atom ppt
lekshmisg91
 
Atoms, Molecules, and Ions
Atoms, Molecules, and IonsAtoms, Molecules, and Ions
Atoms, Molecules, and Ions
Lumen Learning
 
Struture of an atom
Struture of an atomStruture of an atom
Struture of an atom
Niharika Pande
 
Slides on atoms and atomic structure
Slides on atoms and atomic structureSlides on atoms and atomic structure
Slides on atoms and atomic structure
Liwayway Memije-Cruz
 
Atoms And Subatomic Particles
Atoms And Subatomic ParticlesAtoms And Subatomic Particles
Atoms And Subatomic Particles
tnewberry
 
Atomic structure
Atomic structureAtomic structure
Atomic structure
nermine_ghis
 
Periodic table trends power point presentation
Periodic table trends power point presentationPeriodic table trends power point presentation
Periodic table trends power point presentation
Horatio55
 

Recommended

Atomic Structure and the Periodic Table
Atomic Structure and the Periodic TableAtomic Structure and the Periodic Table
Atomic Structure and the Periodic Table
Paul Schumann
 
Structure of atom ppt
Structure of atom pptStructure of atom ppt
Structure of atom ppt
lekshmisg91
 
Atoms, Molecules, and Ions
Atoms, Molecules, and IonsAtoms, Molecules, and Ions
Atoms, Molecules, and Ions
Lumen Learning
 
Struture of an atom
Struture of an atomStruture of an atom
Struture of an atom
Niharika Pande
 
Slides on atoms and atomic structure
Slides on atoms and atomic structureSlides on atoms and atomic structure
Slides on atoms and atomic structure
Liwayway Memije-Cruz
 
Atoms And Subatomic Particles
Atoms And Subatomic ParticlesAtoms And Subatomic Particles
Atoms And Subatomic Particles
tnewberry
 
Atomic structure
Atomic structureAtomic structure
Atomic structure
nermine_ghis
 
Periodic table trends power point presentation
Periodic table trends power point presentationPeriodic table trends power point presentation
Periodic table trends power point presentation
Horatio55
 
Bohr Theory
Bohr TheoryBohr Theory
Bohr Theory
Gargi Education
 
Structure of an Atom
Structure of an AtomStructure of an Atom
Structure of an Atom
Darshan Deokule
 
Electron configuration
Electron configurationElectron configuration
Electron configuration
Kamal Metwalli
 
Electron,nutron,proton
Electron,nutron,protonElectron,nutron,proton
Electron,nutron,proton
Presentation
 
Atomic number, Mass number, Relative atomic mass and Atomic mass unit
Atomic number, Mass number, Relative atomic mass and Atomic mass unitAtomic number, Mass number, Relative atomic mass and Atomic mass unit
Atomic number, Mass number, Relative atomic mass and Atomic mass unit
Qazi GHAFOOR
 
The Structure of an Atom
The Structure of an AtomThe Structure of an Atom
The Structure of an Atom
Reginald V. Finley Sr. M.Ed.
 
Atomic structure
Atomic structureAtomic structure
Atomic structure
Anwar Mohammad
 
Discovery of Subatomic Particles of an Atom
Discovery of Subatomic Particles of an Atom Discovery of Subatomic Particles of an Atom
Discovery of Subatomic Particles of an Atom
Jitendra Kumar Nanda
 
Electrons in Atoms
Electrons in AtomsElectrons in Atoms
Electrons in Atoms
Currituck County High School
 
Chemical bonding (UPDATED)
Chemical bonding (UPDATED)Chemical bonding (UPDATED)
Chemical bonding (UPDATED)
Jimnaira Abanto
 
Valence Electrons
Valence ElectronsValence Electrons
Valence Electrons
TeacherAndrew
 
Atomic structure presentation
Atomic structure presentationAtomic structure presentation
Atomic structure presentation
Lyllwyn Gener
 
Lewis Dot Structure
Lewis Dot StructureLewis Dot Structure
Lewis Dot Structure
Jerome Bigael
 
4-4 Ionic & Covalent Bonding
4-4 Ionic & Covalent Bonding4-4 Ionic & Covalent Bonding
4-4 Ionic & Covalent Bonding
rkelch
 
2.1.3.1 octet rule
2.1.3.1 octet rule2.1.3.1 octet rule
2.1.3.1 octet rule
Martin Brown
 
Electron configuration.ppt
Electron configuration.pptElectron configuration.ppt
Electron configuration.ppt
Charliez Jane Soriano
 
Electron configuration
Electron configurationElectron configuration
Electron configuration
RaphaelZuela
 
Reactivity Series
Reactivity SeriesReactivity Series
Reactivity Series
Fathima Shazna
 
What is Atomic Mass?
What is Atomic Mass?What is Atomic Mass?
What is Atomic Mass?
mrheffner
 
The Atom
The AtomThe Atom
The Atom
Mr.Thurston
 
Mod+13,+Atomic+Structure+Part+B
Mod+13,+Atomic+Structure+Part+BMod+13,+Atomic+Structure+Part+B
Mod+13,+Atomic+Structure+Part+B
NCVPS
 
Atoms, molecules and compounds by waqar
Atoms, molecules and compounds by waqarAtoms, molecules and compounds by waqar
Atoms, molecules and compounds by waqar
Ahmad228
 

More Related Content

What's hot

4-4 Ionic & Covalent Bonding
4-4 Ionic & Covalent Bonding4-4 Ionic & Covalent Bonding
4-4 Ionic & Covalent Bonding
rkelch
 
2.1.3.1 octet rule
2.1.3.1 octet rule2.1.3.1 octet rule
2.1.3.1 octet rule
Martin Brown
 
What is Atomic Mass?
What is Atomic Mass?What is Atomic Mass?
What is Atomic Mass?
mrheffner
 

What's hot (20)

Bohr Theory
Bohr TheoryBohr Theory
Bohr Theory
 
Structure of an Atom
Structure of an AtomStructure of an Atom
Structure of an Atom
 
Electron configuration
Electron configurationElectron configuration
Electron configuration
 
Electron,nutron,proton
Electron,nutron,protonElectron,nutron,proton
Electron,nutron,proton
 
Atomic number, Mass number, Relative atomic mass and Atomic mass unit
Atomic number, Mass number, Relative atomic mass and Atomic mass unitAtomic number, Mass number, Relative atomic mass and Atomic mass unit
Atomic number, Mass number, Relative atomic mass and Atomic mass unit
 
The Structure of an Atom
The Structure of an AtomThe Structure of an Atom
The Structure of an Atom
 
Atomic structure
Atomic structureAtomic structure
Atomic structure
 
Discovery of Subatomic Particles of an Atom
Discovery of Subatomic Particles of an Atom Discovery of Subatomic Particles of an Atom
Discovery of Subatomic Particles of an Atom
 
Electrons in Atoms
Electrons in AtomsElectrons in Atoms
Electrons in Atoms
 
Chemical bonding (UPDATED)
Chemical bonding (UPDATED)Chemical bonding (UPDATED)
Chemical bonding (UPDATED)
 
Valence Electrons
Valence ElectronsValence Electrons
Valence Electrons
 
Atomic structure presentation
Atomic structure presentationAtomic structure presentation
Atomic structure presentation
 
Lewis Dot Structure
Lewis Dot StructureLewis Dot Structure
Lewis Dot Structure
 
4-4 Ionic & Covalent Bonding
4-4 Ionic & Covalent Bonding4-4 Ionic & Covalent Bonding
4-4 Ionic & Covalent Bonding
 
2.1.3.1 octet rule
2.1.3.1 octet rule2.1.3.1 octet rule
2.1.3.1 octet rule
 
Electron configuration.ppt
Electron configuration.pptElectron configuration.ppt
Electron configuration.ppt
 
Electron configuration
Electron configurationElectron configuration
Electron configuration
 
Reactivity Series
Reactivity SeriesReactivity Series
Reactivity Series
 
What is Atomic Mass?
What is Atomic Mass?What is Atomic Mass?
What is Atomic Mass?
 
The Atom
The AtomThe Atom
The Atom
 

Similar to atomic structure

Ch 5 Notes
Ch 5 NotesCh 5 Notes
Ch 5 Notes
kermis
 
Atomic structure
Atomic structureAtomic structure
Atomic structure
smitamalik
 
Atomic Structure
Atomic StructureAtomic Structure
Atomic Structure
Navriti
 
Atomic Structure
Atomic StructureAtomic Structure
Atomic Structure
SAUD MT
 
3.2 structure of atoms
3.2 structure of atoms3.2 structure of atoms
3.2 structure of atoms
ZB Chemistry
 
3a d,3h atomic structure info + qs
3a d,3h atomic structure info + qs3a d,3h atomic structure info + qs
3a d,3h atomic structure info + qs
Ashwin Makhija
 

Similar to atomic structure (20)

Mod+13,+Atomic+Structure+Part+B
Mod+13,+Atomic+Structure+Part+BMod+13,+Atomic+Structure+Part+B
Mod+13,+Atomic+Structure+Part+B
 
Atoms, molecules and compounds by waqar
Atoms, molecules and compounds by waqarAtoms, molecules and compounds by waqar
Atoms, molecules and compounds by waqar
 
Ch 5 Notes
Ch 5 NotesCh 5 Notes
Ch 5 Notes
 
atom.pptx
atom.pptxatom.pptx
atom.pptx
 
Atomic structure
Atomic structureAtomic structure
Atomic structure
 
Com 2 '7 az 112
Com 2 '7 az 112Com 2 '7 az 112
Com 2 '7 az 112
 
Atomic Theory
Atomic TheoryAtomic Theory
Atomic Theory
 
Matter1
Matter1Matter1
Matter1
 
Atomic structure
Atomic structureAtomic structure
Atomic structure
 
Atomic structure
Atomic structureAtomic structure
Atomic structure
 
Atomic Structure
Atomic StructureAtomic Structure
Atomic Structure
 
Atomic Structure
Atomic StructureAtomic Structure
Atomic Structure
 
Atomic models electronic config
Atomic models electronic configAtomic models electronic config
Atomic models electronic config
 
Physics 22 - The Nuclear Atom.pptx
Physics 22 - The Nuclear Atom.pptxPhysics 22 - The Nuclear Atom.pptx
Physics 22 - The Nuclear Atom.pptx
 
Chapt-2-PPT-1-.pptx
Chapt-2-PPT-1-.pptxChapt-2-PPT-1-.pptx
Chapt-2-PPT-1-.pptx
 
3.2 structure of atoms
3.2 structure of atoms3.2 structure of atoms
3.2 structure of atoms
 
3a d,3h atomic structure info + qs
3a d,3h atomic structure info + qs3a d,3h atomic structure info + qs
3a d,3h atomic structure info + qs
 
Attacking The TEKS: Atomic Structure
Attacking The TEKS: Atomic StructureAttacking The TEKS: Atomic Structure
Attacking The TEKS: Atomic Structure
 
Atomic structure
Atomic structureAtomic structure
Atomic structure
 
Unit iii the atom and the prediodic table (2)
Unit iii the atom and the prediodic table (2)Unit iii the atom and the prediodic table (2)
Unit iii the atom and the prediodic table (2)
 

More from Ninth Grade

More from Ninth Grade (7)

Gbondingpps
GbondingppsGbondingpps
Gbondingpps
 
The transition metals.com[6]
The transition metals.com[6]The transition metals.com[6]
The transition metals.com[6]
 
modern periodic table
modern periodic table modern periodic table
modern periodic table
 
Separation techniques for ninth grade
Separation techniques for ninth gradeSeparation techniques for ninth grade
Separation techniques for ninth grade
 
The nature of matter
The nature of matterThe nature of matter
The nature of matter
 
Solubility
Solubility Solubility
Solubility
 
States, boiling point,_melting_point,
States, boiling point,_melting_point,States, boiling point,_melting_point,
States, boiling point,_melting_point,
 

Recently uploaded

Pests of cotton_Sucking_Pests_Dr.UPR.pdf
Pests of cotton_Sucking_Pests_Dr.UPR.pdfPests of cotton_Sucking_Pests_Dr.UPR.pdf
Pests of cotton_Sucking_Pests_Dr.UPR.pdf
PirithiRaju
 
Botany 4th semester file By Sumit Kumar yadav.pdf
Botany 4th semester file By Sumit Kumar yadav.pdfBotany 4th semester file By Sumit Kumar yadav.pdf
Botany 4th semester file By Sumit Kumar yadav.pdf
Sumit Kumar yadav
 
PossibleEoarcheanRecordsoftheGeomagneticFieldPreservedintheIsuaSupracrustalBe...
PossibleEoarcheanRecordsoftheGeomagneticFieldPreservedintheIsuaSupracrustalBe...PossibleEoarcheanRecordsoftheGeomagneticFieldPreservedintheIsuaSupracrustalBe...
PossibleEoarcheanRecordsoftheGeomagneticFieldPreservedintheIsuaSupracrustalBe...
Sérgio Sacani
 
Formation of low mass protostars and their circumstellar disks
Formation of low mass protostars and their circumstellar disksFormation of low mass protostars and their circumstellar disks
Formation of low mass protostars and their circumstellar disks
Sérgio Sacani
 
❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.
❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.
❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.
Nitya salvi
 
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune WaterworldsBiogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Sérgio Sacani
 
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
Lokesh Kothari
 
Seismic Method Estimate velocity from seismic data.pptx
Seismic Method Estimate velocity from seismic data.pptxSeismic Method Estimate velocity from seismic data.pptx
Seismic Method Estimate velocity from seismic data.pptx
AlMamun560346
 
Bacterial Identification and Classifications
Bacterial Identification and ClassificationsBacterial Identification and Classifications
Bacterial Identification and Classifications
Areesha Ahmad
 
Presentation Vikram Lander by Vedansh Gupta.pptx
Presentation Vikram Lander by Vedansh Gupta.pptxPresentation Vikram Lander by Vedansh Gupta.pptx
Presentation Vikram Lander by Vedansh Gupta.pptx
gindu3009
 
Hubble Asteroid Hunter III. Physical properties of newly found asteroids
Hubble Asteroid Hunter III. Physical properties of newly found asteroidsHubble Asteroid Hunter III. Physical properties of newly found asteroids
Hubble Asteroid Hunter III. Physical properties of newly found asteroids
Sérgio Sacani
 
Pests of mustard_Identification_Management_Dr.UPR.pdf
Pests of mustard_Identification_Management_Dr.UPR.pdfPests of mustard_Identification_Management_Dr.UPR.pdf
Pests of mustard_Identification_Management_Dr.UPR.pdf
PirithiRaju
 

Recently uploaded (20)

GBSN - Microbiology (Unit 2)
GBSN - Microbiology (Unit 2)GBSN - Microbiology (Unit 2)
GBSN - Microbiology (Unit 2)
 
COST ESTIMATION FOR A RESEARCH PROJECT.pptx
COST ESTIMATION FOR A RESEARCH PROJECT.pptxCOST ESTIMATION FOR A RESEARCH PROJECT.pptx
COST ESTIMATION FOR A RESEARCH PROJECT.pptx
 
Pests of cotton_Sucking_Pests_Dr.UPR.pdf
Pests of cotton_Sucking_Pests_Dr.UPR.pdfPests of cotton_Sucking_Pests_Dr.UPR.pdf
Pests of cotton_Sucking_Pests_Dr.UPR.pdf
 
CELL -Structural and Functional unit of life.pdf
CELL -Structural and Functional unit of life.pdfCELL -Structural and Functional unit of life.pdf
CELL -Structural and Functional unit of life.pdf
 
Botany 4th semester file By Sumit Kumar yadav.pdf
Botany 4th semester file By Sumit Kumar yadav.pdfBotany 4th semester file By Sumit Kumar yadav.pdf
Botany 4th semester file By Sumit Kumar yadav.pdf
 
PossibleEoarcheanRecordsoftheGeomagneticFieldPreservedintheIsuaSupracrustalBe...
PossibleEoarcheanRecordsoftheGeomagneticFieldPreservedintheIsuaSupracrustalBe...PossibleEoarcheanRecordsoftheGeomagneticFieldPreservedintheIsuaSupracrustalBe...
PossibleEoarcheanRecordsoftheGeomagneticFieldPreservedintheIsuaSupracrustalBe...
 
Formation of low mass protostars and their circumstellar disks
Formation of low mass protostars and their circumstellar disksFormation of low mass protostars and their circumstellar disks
Formation of low mass protostars and their circumstellar disks
 
Hire 💕 9907093804 Hooghly Call Girls Service Call Girls Agency
Hire 💕 9907093804 Hooghly Call Girls Service Call Girls AgencyHire 💕 9907093804 Hooghly Call Girls Service Call Girls Agency
Hire 💕 9907093804 Hooghly Call Girls Service Call Girls Agency
 
GBSN - Microbiology (Unit 1)
GBSN - Microbiology (Unit 1)GBSN - Microbiology (Unit 1)
GBSN - Microbiology (Unit 1)
 
❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.
❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.
❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.
 
Zoology 4th semester series (krishna).pdf
Zoology 4th semester series (krishna).pdfZoology 4th semester series (krishna).pdf
Zoology 4th semester series (krishna).pdf
 
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune WaterworldsBiogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
 
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
 
Seismic Method Estimate velocity from seismic data.pptx
Seismic Method Estimate velocity from seismic data.pptxSeismic Method Estimate velocity from seismic data.pptx
Seismic Method Estimate velocity from seismic data.pptx
 
Bacterial Identification and Classifications
Bacterial Identification and ClassificationsBacterial Identification and Classifications
Bacterial Identification and Classifications
 
Presentation Vikram Lander by Vedansh Gupta.pptx
Presentation Vikram Lander by Vedansh Gupta.pptxPresentation Vikram Lander by Vedansh Gupta.pptx
Presentation Vikram Lander by Vedansh Gupta.pptx
 
Hubble Asteroid Hunter III. Physical properties of newly found asteroids
Hubble Asteroid Hunter III. Physical properties of newly found asteroidsHubble Asteroid Hunter III. Physical properties of newly found asteroids
Hubble Asteroid Hunter III. Physical properties of newly found asteroids
 
Pests of mustard_Identification_Management_Dr.UPR.pdf
Pests of mustard_Identification_Management_Dr.UPR.pdfPests of mustard_Identification_Management_Dr.UPR.pdf
Pests of mustard_Identification_Management_Dr.UPR.pdf
 
SAMASTIPUR CALL GIRL 7857803690 LOW PRICE ESCORT SERVICE
SAMASTIPUR CALL GIRL 7857803690 LOW PRICE ESCORT SERVICESAMASTIPUR CALL GIRL 7857803690 LOW PRICE ESCORT SERVICE
SAMASTIPUR CALL GIRL 7857803690 LOW PRICE ESCORT SERVICE
 
Biological Classification BioHack (3).pdf
Biological Classification BioHack (3).pdfBiological Classification BioHack (3).pdf
Biological Classification BioHack (3).pdf
 

atomic structure

  • 1. AATTOOMMIICC SSTTRRUUCCTTUURREE AA gguuiiddee ffoorr GGCCSSEE ssttuuddeennttss 22001100 KKNNOOCCKKHHAARRDDYY PPUUBBLLIISSHHIINNGG SSPPEECCIIFFIICCAATTIIOONNSS
  • 2. AATTOOMMIICC SSTTRRUUCCTTUURREE INTRODUCTION This Powerpoint show is one of several produced to help students understand selected GCSE Chemistry topics. It is based on the requirements of the AQA specification but is suitable for other examination boards. Individual students may use the material at home for revision purposes and it can also prove useful for classroom teaching with an interactive white board. Accompanying notes on this, and the full range of AS and A2 Chemistry topics, are available from the KNOCKHARDY SCIENCE WEBSITE at... www.knockhardy.org.uk/gcse.htm All diagrams and animations in this Powerpoint are original and created by Jonathan Hopton. Permission must be obtained for their use in any commercial work. All diagrams and animations in this Powerpoint are original and created by Jonathan Hopton. Permission must be obtained for their use in any commercial work.
  • 3. AATTOOMMIICC SSTTRRUUCCTTUURREE CCOONNTTEENNTTSS • Rutherford’s experiment • Structure of atoms • Mass number and atomic number • Atoms and ions • Isotopes • Electronic structures of the first 20 elements
  • 4. THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS Atoms have a small central nucleus, which is made up of protons and neutrons. Around the nucleus are the electrons. Because electrons weigh very much less than protons and neutrons, most of the mass of an atom is concentrated in its nucleus.
  • 6. AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT Many scientists thought atoms were solid like a ‘plum pudding’. Ernest Rutherford wanted to find out what atoms were like.
  • 7. AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT ALPHA (a) PARTICLES GOLD ATOMS Many scientists thought atoms were solid like a ‘plum pudding’. Ernest Rutherford wanted to find out what atoms were like. He fired positively charged ALPHA PARTICLES (helium nuclei) at a very thin sheet of gold and detected what happened to their path.
  • 8. ALPHA (a) PARTICLES MOST WENT STRAIGHT THROUGH AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT MOST WENT STRAIGHT THROUGH MOST OF AN ATOM IS SPACE
  • 9. ALPHA (a) PARTICLES SOME WERE DEFLECTED AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT SOME WERE DEFLECTED NUCLEUS IS POSITIVELY CHARGED
  • 10. AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT ALPHA (a) PARTICLES VERY FEW BOUNCED STRAIGHT BACK VERY FEW BOUNCED STRAIGHT BACK NUCLEUS IS RELATIVELY SMALL
  • 11. ALPHA (a) PARTICLES MOST WENT STRAIGHT THROUGH SOME WERE DEFLECTED AATTOOMMIICC SSTTRRUUCCTTUURREE RUTHERFORD’S EXPERIMENT VERY FEW BOUNCED STRAIGHT BACK SUMMARY MOST WENT STRAIGHT THROUGH SOME WERE DEFLECTED MOST OF AN ATOM IS SPACE NUCLEUS IS POSITIVELY CHARGED VERY FEW BOUNCED STRAIGHT BACK NUCLEUS IS RELATIVELY SMALL
  • 12. THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge PROTON NEUTRON ELECTRON Atoms have a small central nucleus, which is made up of protons and neutrons and around which there are electrons.
  • 13. THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge PROTON NEUTRON ELECTRON
  • 14. THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge PROTON NUCLEUS 1 +1
  • 15. THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge +1 1 PROTON NEUTRON 0 1 NUCLEUS NUCLEUS
  • 16. THE SSTTRRUUCCTTUURREE OOFF AATTOOMMSS The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge PROTON NEUTRON ELECTRON +1 0 -1 1 1 Negligble ‘Very small’ NUCLEUS NUCLEUS IN SHELLS AROUND THE NUCLEUS
  • 17. THE STRUCTURE OOFF AATTOOMMSS -- SSuummmmaarryy The three important particles found in atoms are… Particle Where it is found Relative mass Relative charge PROTON NEUTRON ELECTRON +1 0 -1 1 1 Negligble ‘Very small’ NUCLEUS NUCLEUS IN SHELLS AROUND THE NUCLEUS
  • 18. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus
  • 19. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus Symbol Atoms of an element are given a symbol Some have one capital letter H, N, O, P, K Some have two letters, the first He, Na, Mg Cu one being a capital Recently discovered high atomic Unh number elements have been given symbols with three letters
  • 20. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus Symbol Atoms of an element are given a symbol Some have one capital letter H, N, O, P, K Some have two letters, the first He, Na, Mg Cu one being a capital Recently discovered high atomic Unh number elements have been given symbols with three letters When necessary, the atomic number and the mass number can be written alongside the symbol
  • 21. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na When necessary, the atomic number and the mass number can be written alongside the symbol
  • 22. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na Mass Number (A) PROTONS + NEUTRONS Atomic Number (Z) PROTONS
  • 23. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na Mass Number (A) PROTONS + NEUTRONS Atomic Number (Z) PROTONS THESE ALWAYS GO TOGETHER – ANYTHING WITH 11 PROTONS MUST BE SODIUM
  • 24. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na Mass Number (A) PROTONS + NEUTRONS Atomic Number (Z) PROTONS
  • 25. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na Mass Number (A) PROTONS + NEUTRONS Atomic Number (Z) PROTONS THERE WILL BE 12 NEUTRONS IN THE NUCLEUS 23 – 11 = 12
  • 26. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Atomic Number (Z) Number of protons in the nucleus of an atom Mass Number (A) Sum of the protons and neutrons in the nucleus 23 11 Na Mass Number (A) PROTONS + NEUTRONS Atomic Number (Z) PROTONS
  • 28. AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS
  • 29. AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS PROTONS 6 11 16 17 20 ELECTRONS 6 10 16 18 18 ATOM or ION?
  • 30. AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS PROTONS 6 11 16 17 20 ELECTRONS 6 10 16 18 18 ATOM or ION? ATOM ION ATOM ION ION
  • 31. AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS THE CHARGE ON AN ION DEPENDS ON THE RELATIVE NUMBERS OF PROTONS AND ELECTRONS
  • 32. AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS THE CHARGE ON AN ION DEPENDS ON THE RELATIVE NUMBERS OF PROTONS AND ELECTRONS MORE ELECTRONS THAN PROTONS NEGATIVE FEWER ELECTRONS THAN PROTONS POSITIVE
  • 33. AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS THE CHARGE ON AN ION DEPENDS ON THE RELATIVE NUMBERS OF PROTONS AND ELECTRONS MORE ELECTRONS THAN PROTONS NEGATIVE FEWER ELECTRONS THAN PROTONS POSITIVE
  • 34. AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS THE CHARGE ON AN ION DEPENDS ON THE RELATIVE NUMBERS OF PROTONS AND ELECTRONS MORE ELECTRONS THAN PROTONS NEGATIVE FEWER ELECTRONS THAN PROTONS POSITIVE PROTONS 6 11 16 17 20 ELECTRONS 6 10 16 18 18 ATOM or ION? ATOM ION ATOM ION ION CHARGE
  • 35. AATTOOMMSS AANNDD IIOONNSS ATOMS SAME NUMBER OF ELECTRONS AS PROTONS IONS DIFFERENT NUMBER OF ELECTRONS AND PROTONS THE CHARGE ON AN ION DEPENDS ON THE RELATIVE NUMBERS OF PROTONS AND ELECTRONS MORE ELECTRONS THAN PROTONS NEGATIVE FEWER ELECTRONS THAN PROTONS POSITIVE PROTONS 6 11 16 17 20 ELECTRONS 6 10 16 18 18 ATOM or ION? ATOM ION ATOM ION ION CHARGE Neutral + Neutral - 2+
  • 36. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Protons Neutrons Electrons Charge Atomic Number Mass Number Symbol A 19 21 19 B 20 0 40 C + 11 23 D 6 6 0 E 92 0 235 F 6 13 G 16 2- 16 H 27Al3+
  • 37. MASS NUMBER AANNDD AATTOOMMIICC NNUUMMBBEERR Protons Neutrons Electrons Charge Atomic Number Mass Number Symbol A 19 21 19 0 19 40 40K B 20 20 20 0 20 40 40Ca C 11 12 10 + 11 23 23Na+ D 6 6 6 0 6 12 12C E 92 143 92 0 92 235 235U F 6 7 6 0 6 13 13C G 16 16 18 2- 16 32 32S2- H 13 14 10 3+ 13 27 27Al3+
  • 39. IISSOOTTOOPPEESS Atoms of the same element can have different numbers of neutrons. These atoms are called ISOTOPES of that element.
  • 40. IISSOOTTOOPPEESS Atoms of the same element can have different numbers of neutrons. These atoms are called ISOTOPES of that element. Isotopes of an element have SAME NUMBER OF PROTONS DIFFERENT NUMBER OF NEUTRONS
  • 41. IISSOOTTOOPPEESS Atoms of the same element can have different numbers of neutrons. These atoms are called ISOTOPES of that element. Isotopes of an element have SAME NUMBER OF PROTONS DIFFERENT NUMBER OF NEUTRONS or put another way SAME ATOMIC NUMBER DIFFERENT MASS NUMBER
  • 42. IISSOOTTOOPPEESS Atoms of the same element can have different numbers of neutrons. These atoms are called ISOTOPES of that element. Isotopes of an element have SAME NUMBER OF PROTONS DIFFERENT NUMBER OF NEUTRONS or put another way SAME ATOMIC NUMBER DIFFERENT MASS NUMBER ISOTOPES HAVE SIMILAR CHEMICAL PROPERTIES
  • 43. ISOTOPES OF HYDROGEN 1 H 1 2 H 1 IISSOOTTOOPPEESS
  • 44. ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER IISSOOTTOOPPEESS
  • 45. IISSOOTTOOPPEESS ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER 1 1
  • 46. IISSOOTTOOPPEESS ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER 1 1 MASS NUMBER
  • 47. IISSOOTTOOPPEESS ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER 1 1 MASS NUMBER 1 2 PROTONS
  • 48. IISSOOTTOOPPEESS ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER 1 1 MASS NUMBER 1 2 PROTONS 1 1 NEUTRONS
  • 49. IISSOOTTOOPPEESS ISOTOPES OF HYDROGEN 1 H 1 2 H 1 ATOMIC NUMBER 1 1 MASS NUMBER 1 2 PROTONS 1 1 NEUTRONS 0 1
  • 50. ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER MASS NUMBER PROTONS NEUTRONS IISSOOTTOOPPEESS
  • 51. IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20
  • 52. IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE
  • 53. IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25%
  • 54. IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25% RATIO
  • 55. IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25% RATIO 3 : 1
  • 56. IISSOOTTOOPPEESS ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25% RATIO 3 : 1 AVERAGE
  • 57. ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25% RATIO 3 : 1 AVERAGE MASS 35 + 35 + 35 + 37 = 4 IISSOOTTOOPPEESS
  • 58. ISOTOPES OF CHLORINE 3 5 Cl 17 3 7 Cl 17 ATOMIC NUMBER 17 17 MASS NUMBER 35 37 PROTONS 17 17 NEUTRONS 18 20 ABUNDANCE 75% 25% RATIO 3 : 1 AVERAGE MASS 35 + 35 + 35 + 37 = 35.5 4 IISSOOTTOOPPEESS
  • 59. IISSOOTTOOPPEESS ISOTOPES OF CARBON 1 2 C 6 1 3 C 6 1 4 C 6 ATOMIC NUMBER 6 6 6 MASS NUMBER 12 13 14 PROTONS 6 6 6 NEUTRONS 6 7 8
  • 60. IISSOOTTOOPPEESS ISOTOPES OF CARBON 1 2 C 6 1 3 C 6 1 4 C 6 ATOMIC NUMBER 6 6 6 MASS NUMBER 12 13 14 PROTONS 6 6 6 NEUTRONS 6 7 8
  • 61. AATTOOMMIICC SSTTRRUUCCTTUURREE TTHHEE AARRRRAANNGGEEMMEENNTT OOFF EELLEECCTTRROONNSS IINN AATTOOMMSS OOFF TTHHEE FFIIRRSSTT TTWWEENNTTYY EELLEEMMEENNTTSS IINN TTHHEE PPEERRIIOODDIICC TTAABBLLEE
  • 62. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca + ATOMIC NUMBER 1 GROUP 1 ELECTRONIC CONFIGURATION 1 HYDROGEN • atoms have the same number of electrons as protons • electrons are found in shells (energy levels) around the nucleus • electrons are put into the lowest energy level first
  • 63. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 2+ ATOMIC NUMBER 2 GROUP 0 ELECTRONIC CONFIGURATION 2 HELIUM • the innermost shell can hold up to two electrons
  • 64. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 3+ ATOMIC NUMBER 3 GROUP 1 ELECTRONIC CONFIGURATION 2,1 LITHIUM • each shell (energy level) can hold a maximum number of electrons • the first one can only hold 2,so the next goes in the second shell
  • 65. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 4+ ATOMIC NUMBER 4 GROUP 2 ELECTRONIC CONFIGURATION 2,2 BERYLLIUM • the second shell is gradually filled up until it has eight electrons
  • 66. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 5+ ATOMIC NUMBER 5 GROUP 3 ELECTRONIC CONFIGURATION 2,3 BORON • the second shell is gradually filled up until it has eight electrons
  • 67. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 6+ ATOMIC NUMBER 6 GROUP 4 ELECTRONIC CONFIGURATION 2,4 CARBON • the second shell is gradually filled up until it has eight electrons
  • 68. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 7+ ATOMIC NUMBER 7 GROUP 5 ELECTRONIC CONFIGURATION 2,5 NITROGEN • the second shell is gradually filled up until it has eight electrons
  • 69. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 8+ ATOMIC NUMBER 8 GROUP 6 ELECTRONIC CONFIGURATION 2,6 OXYGEN • the second shell is gradually filled up until it has eight electrons
  • 70. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 9+ ATOMIC NUMBER 9 GROUP 7 ELECTRONIC CONFIGURATION 2,7 FLUORINE • the second shell is gradually filled up until it has eight electrons
  • 71. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 10+ ATOMIC NUMBER 10 GROUP 0 ELECTRONIC CONFIGURATION 2,8 NEON • the second shell is now full • full outer shells are characteristic of the unreactive NOBLE GASES
  • 72. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 11+ ATOMIC NUMBER 11 GROUP 1 ELECTRONIC CONFIGURATION 2,8,1 SODIUM • as the second shell is full, electrons go into the third shell • the third shell can hold up to a maximum of eight electrons
  • 73. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 12+ ATOMIC NUMBER 12 GROUP 2 ELECTRONIC CONFIGURATION MAGNESIUM 2,8,2
  • 74. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 13+ ATOMIC NUMBER 13 GROUP 3 ELECTRONIC CONFIGURATION 2,8,3 ALUMINIUM
  • 75. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 14+ ATOMIC NUMBER 14 GROUP 4 ELECTRONIC CONFIGURATION 2,8,4 SILICON
  • 76. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 15+ ATOMIC NUMBER 15 GROUP 5 ELECTRONIC CONFIGURATION PHOSPHORUS 2,8,5
  • 77. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE SULPHUR (SULFUR) F Cl He Ne Ar Ca 16+ ATOMIC NUMBER 16 GROUP 6 ELECTRONIC CONFIGURATION 2,8,6
  • 78. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca ATOMIC NUMBER 17 GROUP 7 ELECTRONIC CONFIGURATION 2,8,7 17+ CHLORINE
  • 79. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 18+ ATOMIC NUMBER 18 GROUP 0 ELECTRONIC CONFIGURATION 2,8,8 ARGON • the third shell is now full • full outer shells are characteristic of the unreactive NOBLE GASES
  • 80. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 19+ ATOMIC NUMBER 19 GROUP 1 ELECTRONIC CONFIGURATION POTASSIUM 2,8,8,1 • as the third shell is full, electrons go into the fourth shell
  • 81. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 20+ ATOMIC NUMBER 20 GROUP 2 ELECTRONIC CONFIGURATION CALCIUM 2,8,8,2
  • 83. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 16+ ELECTRONS ? PROTONS ? ATOM / ION ? ELEMENT ? ANSWER ? WHAT IS IT?
  • 84. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 16+ ELECTRONS 16 PROTONS 16 ATOM / ION ATOM ELEMENT SULPHUR ANSWER S WHAT IS IT?
  • 85. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 19+ ELECTRONS ? PROTONS ? ATOM / ION ? ELEMENT ? ANSWER ? WHAT IS IT?
  • 86. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 19+ ELECTRONS 18 PROTONS 19 ATOM / ION POSITIVE ION ELEMENT POTASSIUM ANSWER K+ WHAT IS IT?
  • 87. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 17+ ELECTRONS ? PROTONS ? ATOM / ION ? ELEMENT ? ANSWER ? WHAT IS IT?
  • 88. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 17+ ELECTRONS 18 PROTONS 17 ATOM / ION NEGATIVE ION ELEMENT CHLORINE ANSWER Cl¯ WHAT IS IT?
  • 89. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 8+ ELECTRONS ? PROTONS ? ATOM / ION ? ELEMENT ? ANSWER ? WHAT IS IT?
  • 90. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 8+ ELECTRONS 10 PROTONS 8 ATOM / ION NEGATIVE ION ELEMENT OXYGEN ANSWER O2- WHAT IS IT?
  • 91. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 13+ ELECTRONS ? PROTONS ? ATOM / ION ? ELEMENT ? ANSWER ? WHAT IS IT?
  • 92. H Li Na K Be Mg B Al C Si N P O S AATTOOMMIICC SSTTRRUUCCTTUURREE F Cl He Ne Ar Ca 13+ ELECTRONS 10 PROTONS 13 ATOM / ION POSITIVE ION ELEMENT ALUMINIUM ANSWER Al3+ WHAT IS IT?
  • 93. AATTOOMMIICC SSTTRRUUCCTTUURREE TTHHEE EENNDD © 22001111 JJOONNAA TTHHAANN HHOOPPTTOONN && KKNNOOCCKKHHAARRDDYY PPUUBBLLIISSHHIINNGG