Although $\mathrm{CN}^{-}$ion and $\mathrm{N}_2$ molecule are isoelectronic, yet $\mathrm{N}_2$ molecule is…

Although $\mathrm{CN}^{-}$ion and $\mathrm{N}_2$ molecule are isoelectronic, yet $\mathrm{N}_2$ molecule is chemically inert because of
  1. presence of more number of electrons in bonding orbitals
  2. lone bond energy
  3. absence of bond polarity
  4. uneven electron distribution.

Solution

In nitrogen molecule, both the nitrogen atoms have same electronegativity. So it has zero polarity and hence less tendency to break away and form ions.

Asked in: JEE Main 2012 (12 May Online)

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