Chemistry - CHEMICAL BONDING Question with Solution | TestHub

In ${\mathrm{C}}_2-{\mathrm{C}}_2{}^{+}$electron is removed from bonding molecular orbital so bond order decreases. In $\mathrm{NO}$ $⟶{\mathrm{NO}}^{+}$, electron is removed from anti bonding molecular orbital so bond order increases and nature changes from paramagnetic to diamagnetic. Hence, (B) is correct.