Question

What is the ionic charge for C, Si, Ge, Sn and Pb?

Answer 1

An atom of carbon has 4 electrons in its outermost shell, which means that 
its ionic charge is 4+ or 4-
Si is in same group as carbon so its also 4+ or 4-
Germanium is 4+.
Sn is also 2+ or 4+
Pb is usually +2