According to molecular orbital theory, the number of unpaired electron(s) in O 2 2 - is _________ .

Step-by-step solution

O 2 - 2 = 18 e - , there is no unpaired electron σ 1 s 2 σ * 1 s 2 σ 2 s 2 σ * 2 s 2 σ 2 p z 2 π 2 p 2 x = π 2 p 2 y π * 2 p x 2 = π * 2 p 2 y