The number of antibonding electron pairs in O ₂²⁻ molecular ion on the basis of molecular orbital theory is (Atomic number of O is 18 )

Step-by-step solution

The electronic configuration of O ₂²⁻ ion is aligned & O ₂²⁻- 1 s², ^ * 1 s², 2 s², 2 s², 2 p_ z ², 2 p_ x ², & 2 p_ y ², 2 p_ x ², 2 p_ y ² aligned Hence, number of antibonding electron pairs in O ₂²⁻ molecular ion are four.