The species having bond order different from that in CO is - Vidyadip

MCQ

The species having bond order different from that in $\mathrm{CO}$ is

✓
$\mathrm{NO}^{-}$
B
$\mathrm{NO}^{+}$
C
$\mathrm{CN}^{-}$
D
$\mathrm{N}_2$

✓

Answer

Correct option: A.

$\mathrm{NO}^{-}$

a
$\mathrm{NO}^{-}$($16$ electron system)

Bond order $=2$.

$\mathrm{NO}^{\oplus}, \mathrm{CN}^{-}$and $\mathrm{N}_2$ are isoelectronic with $\mathrm{CO}$ therefore all have same bond order $(=3)$

Hence ($A$) is correct.

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