The number of valence electrons in the O2- ion is

• GC Atomic Structure

The number of valence electrons in the O^2- ion is

1. 4
2. 6
3. 8
4. 10

Answer

Oxygen (atomic number 16) has 6 electrons in outermost shell. O^2- has 2 more electrons. Thus, total there are 8 electrons.

The correct option is C.