Consider the following species: $ ext{CN}^+, ext{CN}^-, ext{NO}$ and $ ext{CN}$. Which one of these will

Question

Consider the following species: $	ext{CN}^+, 	ext{CN}^-, 	ext{NO}$ and $	ext{CN}$. Which one of these will have the highest bond order?

Accepted Answer

Bond order is calculated using molecular orbital theory. $	ext{CN}^-$ has 14 electrons (bond order 3), $	ext{CN}$ has 13 electrons (bond order 2.5), $	ext{CN}^+$ has 12 electrons (bond order 2), and $	ext{NO}$ has 15 electrons (bond order 2.5). Thus, $	ext{CN}^-$ has the highest bond order.

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