Among the following molecules/ ions, C 2 2 - , N 2 2 - , O 2 2 - , O 2 Which one is diamagnetic and has the shortest bond length?

Step-by-step solution

O 2 ( 16 ) =         σ 1 s 2 σ * 1 s 2   σ 2 s 2   σ * 2 s 2   σ 2 p z 2   π 2 p x 2 = π 2 p y 2 π *   2 p x 1 = π 2 p y 1 Paramagnetic; Bond order =   2 O 2 2 - ( 18 ) =         σ 1 s 2 σ * 1 s 2   σ 2 s 2   σ * 2 s 2   σ 2 p z 2     π 2 p x 2 = π 2 p y 2 π *   2 p x 2 = π * 2 p y 2 Diamagnetic; Bond order =   1 N 2 2 - (