Describe the relationship between the number of valence electrons and the chemical properties of atoms.?!?!

The valence electrons are determined by the column that the element falls in.

Column 1 has 1 valence electron

Column 2 has 2 valence electrons

Column 13 has 3 valence electrons

Column 15 has 5 valence electrons

column 16 has 6 valence electrons

column 17 has 7 valence electrons

Elements are trying to become stable by filling the outer energy level. Columns 1,2,3 do this by losing 1,2 or 3 electrons and becoming positive ions. + 1, + 2, + 3, respectively

Columns 15, 16, 17 do this by taking those electrons and becoming negative ions. - 3, - 2, - 3. respectively.