Question

Nitrosonium ion $\left(N{O}^{+}\right)$ is isoelectronic with :

• A. carbon dioxide
• B. carbon monoxide
• C. nitrogen dioxide
• D. nitric oxide

Answer 1

The correct option is B carbon monoxide

Nitrosonium ion $\left(N{O}^{+}\right)$ has $14$ electrons and so, it is isoelectronic with $CO$, which also has $14$ electrons.

Nitric oxide $\left(NO\right)$, carbon dioxide $\left(C{O}_2\right)$ and nitrogen dioxide $\left(N{O}_2\right)$ have $15,22$ and $23$ electrons respectively.