Question

The cyanide ion, $C{N}^{-}$and $N_2$ are isoelectronic, but in contrast to $C{N}^{-},N_2$ is chemically inert, because of :

• A. low bond energy
• B. absence of bond polarity
• C. unsymmetrical electron distribution
• D. presence of more number of electrons in bonding orbitals

Answer 1

Answer: (B)

absence of bond polarity

The cyanide ions, $C{N}^{-}$and $N_2$ are isoelectronic, but in contrast to $C{N}^{-},N_2$ is chemically inert because of the absence of polarity of bond. Cyanide ion is negatively charged but $N_2$ is neutral molecule.