N 2 and O 2 are converted to monopositive cations N 2 + and O 2 + respectively. Which set is having correct statements? 1 . In O 2 + , paramagnetism decreases 2 . N 2 + becomes diamagnetic 3 . In O 2 + , the bond order increases 4 . In N 2 + the N - N bond is weakened.

Step-by-step solution

M.O. configuration of N 2 is σ 1s 2 σ * 1s 2 σ 2s 2 σ * 2s 2 π 2 p x 2 π 2 p y 2 σ 2 p z 1 B.O. of N 2 = 10 - 4 2 = 3 M.O. configuration of N 2 + is σ 1s 2 σ * 1s 2 σ 2s 2 σ * 2s 2 π 2 p x 2 π 2 p y 2 σ 2 p z 1 B.O. of N 2 + = 9 - 4 2 = 2.5 Hence, N 2 + becomes paramagnetic so statement 2 is incorrect M.O. of configuration of O 2 is σ 1s 2 σ * 1s2 2 σ 2s 2 σ * 2s 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 So B.O. of O 2 = 10 – 6 2 = 2 M.O. configuration of O 2 + is σ 1s 2 σ * 1s 2 σ 2s 2 σ * 2s 2 σ 2 p