Question

The pair of species having the same magnetic nature (paramagnetic/diamagnetic) is:

• A. $N_2$ and $O_2$
• B. $N_2$ and $O_2^{-}$
• C. $NO$ and $C{N}^{-}$
• D. $C{N}^{-}$ and $N{O}^{+}$

Answer 1

The correct option is D $C{N}^{-}$ and $N{O}^{+}$

Species having unpaired electrons are paramagnetic in nature and species where all the electrons are paired are diamagnetic in nature.

a) $N_2$ is diamagnetic and $O_2$ is paramagnetic in nature.

b) $N_2$ is diamagnetic and $O_2^{-}$ is paramagnetic in nature.

c) $NO$ is paramagnetic and $C{N}^{-}$ is diamagnetic in nature.

d) Both $C{N}^{-}$ and $N{O}^{+}$ have 14 electrons each and are diamagnetic in nature.