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Classification Of Elements

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Classification of Elements January 9, 2009
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Henry Mosley (1914) ,[object Object],[object Object],[object Object]
Periodic Law ,[object Object],[object Object]
Elements are arranged: Vertically into Groups or Families Horizontally Into Periods
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Every element in a family has the same number of valence electrons
The group 2 atoms all have 2 valence electrons Be (Beryllium) Atom Mg (Magnesium) Atom
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Each atom has the same number of electron shells .
The period 4 atoms each have 4 electron containing shells K (Potassium) Atom Fe (Iron) Atom Kr (Krypton) Atom 4 th Shell
Metals ,[object Object],[object Object],[object Object],[object Object],[object Object]
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Non-metals ,[object Object],[object Object],[object Object],[object Object],[object Object]
Metalloids ,[object Object],[object Object],[object Object],[object Object]
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Classification Of Elements

  • 1.
  • 2. Classification of Elements January 9, 2009
  • 3.
  • 4.
  • 5.
  • 6.
  • 7. Elements are arranged: Vertically into Groups or Families Horizontally Into Periods
  • 8.
  • 9. Every element in a family has the same number of valence electrons
  • 10. The group 2 atoms all have 2 valence electrons Be (Beryllium) Atom Mg (Magnesium) Atom
  • 11.
  • 12. Each atom has the same number of electron shells .
  • 13. The period 4 atoms each have 4 electron containing shells K (Potassium) Atom Fe (Iron) Atom Kr (Krypton) Atom 4 th Shell
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.