The number of antibonding electron pairs in O2−2 molecular ion on the basis of M.O. theory (At. No. of O= 8) is

Q. The number of antibonding electron pairs in O²⁻₂ molecular ion on the basis of M.O. theory (At. No. of O= 8) is

1. 2
2. 3
3. 4
4. 5

Answer: 4