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The Periodic Table
The Periodic Table and the Elements ,[object Object],[object Object],[object Object]
Dmitri Mendeleev  (1869) In 1869 Mendeleev and Lothar Meyer (Germany) published nearly identical classification  schemes for elements known to date.  The periodic table is base on the similarity of properties and reactivities exhibited by certain elements.  Later, Henri Moseley ( England,1887-1915) established that each elements has a unique atomic number, which is how the current periodic table is organized. http://www.chem.msu.su/eng/misc/mendeleev/welcome.html
Reading the Periodic Table:  Classification ,[object Object]
Families of the Periodic Table ,[object Object],Alkali Alkaline (earth) Transition Metals Noble Gas Halogen Chalcogens
Periodic Table   e -  configuration from the periodic periodic table ,[object Object],[object Object],H 1s 1 Li 2s 1 Na 3s 1 K 4s 1 Rb 5s 1 Cs 6s 1 Fr 7s 1 Be 2s 2 Mg 3s 2 Ca 4s 2 Sr 5s 2 Ba 6s 2 Ra 7s 2 Sc 3d 1 Ti 3d 2 V 3d 3 Cr 4s 1 3d 5 Mn 3d 5 Fe 3d 6 Co 3d 7 Ni 3d 8 Zn 3d 10 Cu 4s 1 3d 10 B 2p 1 C 2p 2 N 2p 3 O 2p 4 F 2p 5 Ne 2p 6 He 1s 2 Al 3p 1 Ga 4p 1 In 5p 1 Tl 6p 1 Si 3p 2 Ge 4p 2 Sn 5p 2 Pb 6p 2 P 3p 3 As 4p 3 Sb 5p 3 Bi 6p 3 S 3p 4 Se 4p 4 Te 5p 4 Po 6p 4 Cl 3p 5 Be 4p 5 I 5p 5 At 6p 5 Ar 3p 6 Kr 4p 6 Xe 5p 6 Rn 6p 6 Y 4d 1 La 5d 1 Ac 6d 1 Cd 4d 10 Hg 5d 10 Ag 5s 1 4d 10 Au 6s 1 5d 10 Zr 4d 2 Hf 5d 2 Rf 6d 2 Nb 4d 3 Ta 5d 3 Db 6d 3 Mo 5s 1 4d 5 W 6s 1 5d 5 Sg 7s 1 6d 5 Tc 4d 5 Re 5d 5 Bh 6d 5 Ru 4d 6 Os 5d 6 Hs 6d 6 Rh 4d 7 Ir 5d 7 Mt 6d 7 Ni 4d 8 Ni 5d 8
Periodic Table: electron behavior ,[object Object]
THE PERIODIC TABLE
2. Trend in  Atomic Radius ,[object Object],[object Object]
3. Trend in  Ionization Energy Ionization energy:  The energy required to remove the valence electron from an atomic specie.
4. Trend in  Electron Affinity Electron affinity is a measure of the energy that is released when an atom acquires an electron. We say that the more energy is released, the more readily the atom becomes an anion.
[object Object]
Summary of Trend

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Ppt periodic trends

  • 2.
  • 3. Dmitri Mendeleev (1869) In 1869 Mendeleev and Lothar Meyer (Germany) published nearly identical classification schemes for elements known to date. The periodic table is base on the similarity of properties and reactivities exhibited by certain elements. Later, Henri Moseley ( England,1887-1915) established that each elements has a unique atomic number, which is how the current periodic table is organized. http://www.chem.msu.su/eng/misc/mendeleev/welcome.html
  • 4.
  • 5.
  • 6.
  • 7.
  • 9.
  • 10. 3. Trend in Ionization Energy Ionization energy: The energy required to remove the valence electron from an atomic specie.
  • 11. 4. Trend in Electron Affinity Electron affinity is a measure of the energy that is released when an atom acquires an electron. We say that the more energy is released, the more readily the atom becomes an anion.
  • 12.