by subtracting 8 from the group number. this was answer by a Sone.
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The charge of a group A nonmetal ion is determined by subtracting the group number from 8. For example, group 6A nonmetals would typically have a charge of 2- when they form ions.
Carbon, Silicon (a metalloid), Germanium (a metalloid),
Carbon is in the same group as lead.
No, helium is not both a metal and a nonmetal. The element helium (He), along with its cousins in Group 18 of the periodic table of the elements, is a monatomic nonmetal.
The halogens.
Fluorine is classified as a nonmetal. It is a highly reactive, gaseous element that belongs to the halogen group in the periodic table.