Based on resonance and fractional bond orders, which of the following sequences correctly represent — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Bond length $\propto \frac{1}{\text{Bond Order}}$. For A: $H_2O_2$ (B.O. 1) $>$ $O_3$ (B.O. 1.5) $>$ $O_2$ (B.O. 2). For B: $CO_3^{2-}$ (B.O. 1.33) $>$ $CO_2$ (B.O. 2) $>$ $CO$ (B.O. 3). For C: $NO_3^-$ (B.O. 1.33) $>$ $NO_2^-$ (B.O. 1.5) $>$ $NO^+$ (B.O. 3). D is incorrect based on calculated bond orders.