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  4. The ground state electronic configuration of valence shell electrons in nitrogen molecule ( N 2) is written as K K, σ 2 s2, overset*σ 2 s2, σ 2 px2, π 2 py2 ≈ π 2 pz2 Bond order in nitrogen molecule is

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Q. The ground state electronic configuration of valence shell electrons in nitrogen molecule $\left( N _{2}\right)$ is written as
$K K, \sigma 2 s^{2}, \overset{*}\sigma 2 s^{2}, \sigma 2 p_{x}^{2}, \pi 2 p_{y}^{2} \approx \pi 2 p_{z}^{2}$
Bond order in nitrogen molecule is

AIPMTAIPMT 1995Chemical Bonding and Molecular Structure

Solution:

The $MO$ configuration of $N _{2}$ is
$K K, \sigma 2 s^{2},\overset{*} {\sigma} 2 s^{2}, \sigma 2 p_{x}^{2}, \pi 2 p_{y}^{2} \approx \pi 2 p_{z}^{2}$
Bond order of
$N_{2}=\frac{1}{2}\left[N_{b}-N_{a}\right]=\frac{1}{2}[8-2]=\frac{6}{2}=3$