Periodic table

[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],Subatomic particles Charge Protons, p Positive charge (+1) Neutrons, n No charge (0) Electrons ,e Negative charge (-1)

Proton number and nucleon number Symbol of element ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NOTE BOOK Terms Meaning Proton Number The no of protons in an atom Nucleon Number The total number of protons + neutrons in an atom No of neutrons = Nucleon number – Number of protons

Isotope ,[object Object],[object Object],[object Object],[object Object],[object Object],NOTE BOOK

Isotope ,[object Object],[object Object],[object Object],[object Object],[object Object],Although there are only 115 elements, there are MORE than 1700 ISOTOPES on the earth. NOTE BOOK

Hydrogen Isotope Each isotope is named by INSERTING THE NUCLEON NUMBER AFTER the name of element NOTE BOOK

EXERCISE 4.2 ,[object Object],[object Object],EXERCISE BOOK ATOM NUMBER OF PROTON NUMBER OF ELECTRONS NUMBER OF NEUTRONS V 7 7 W 8 9 X 9 10 ELEMENT ISOTOPE NUMBER OF PROTONS NUMBER OF ELECTRONS NUMBER OF NEUTRONS CHLORINE Chlorine-35 Chlorine-37

Periodic Table ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NOTE BOOK

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NOTE BOOK

Locations of metals, non- metals and semi-metals ,[object Object],[object Object],[object Object],NOTE BOOK

Importance of periodic table ,[object Object],[object Object],[object Object],NOTE BOOK

Periodic table

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Periodic table