A sulfur atom will gain two electrons to form a 2- sulfide ion.
covalent
+3 ion
Mainly Silver(I) or Ag+ ion. It can also form Silver(II) or Ag2+ ion.
Anion
+2
CoCl2 forms two types of ion: Co2+ and Cl-
+3 ion
Cation(Pt2+)
Do you mean "sulfur?" If so, it's nonmetallic, but takes the form of a crystalline solid.
Einsteinium can form cations as Es2+ or Es3+.
Na+ Cation
carbon is formed