Which of the following groups contain strictly isoelectronic species, all of which exhibit an identi — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Isoelectronic species with 14 electrons generally exhibit a maximum bond order of 3.0 (filling up to the $\sigma 2p_z$ orbital with no antibonding $2p$ electrons). $CO$, $NO^+$, $CN^-$, $N_2$, $O_2^{2+}$, and $C_2^{2-}$ all possess exactly 14 valence/total electrons and a bond order of 3. Group D contains 15, 16, and 13 electron species with fractional bond orders.