Although CN^- ion and N_2 molecule are isoelectronic, yet N_2 molecule is chemically inert because of

Q15 / 90 · JEE Main 2012 (12 May Online) · Chemistry

Although $\mathrm{CN}^{-}$ion and $\mathrm{N}_2$ molecule are isoelectronic, yet $\mathrm{N}_2$ molecule is chemically inert because of

A
presence of more number of electrons in bonding orbitals
B
lone bond energy
Correct answer
C
absence of bond polarity
D
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.

Hence, the correct answer is option: 'C'.

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