Based on Molecular Orbital Theory, what is the correct sequence of increasing bond order for the fol — Chemical Bonding Chemistry Question

💡 Solution & Explanation

According to MOT: $O_2$ has 16 $e^-$ (BO = 2). $O_2^+$ has 15 $e^-$ (1 less antibonding $e^-$, BO = 2.5). $O_2^-$ has 17 $e^-$ (1 more antibonding $e^-$, BO = 1.5). $O_2^{2-}$ has 18 $e^-$ (2 more antibonding $e^-$, BO = 1.0). The sequence of increasing bond order is $1.0 < 1.5 < 2.0 < 2.5$, corresponding to $O_2^{2-} < O_2^- < O_2 < O_2^+$.