Chemical Bonding and Molecular Structure - Result Question 92
####94. Consider the following species :
and
Which one of these will have the highest bond order?
[2018]
(a)
(b)
(c)
(d)
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Solution:
- (b) $NO:(\sigma 1 s)^{2},(\sigma^{} 1 s)^{2},(\sigma 2 s)^{2},(\sigma^{} 2 s)^{2},(\sigma 2 p_z)^{2}
(\pi 2 p_x)^{2}=(\pi 2 p_y)^{2},(\pi^{*} 2 p_x)^{1}=(\pi * 2 p_y)^{0}$
B.O.
$CN^{-}:(\sigma 1 s)^{2},(\sigma^{} 1 s)^{2},(\sigma 2 s)^{2},(\sigma^{} 2 s)^{2}
B.O.
$CN:(\sigma 1 s)^{2},(\sigma^{} 1 s)^{2},(\sigma 2 s)^{2},(\sigma^{} 2 s)^{2}
B.O.
$CN^{+}:(\sigma 1 s)^{2},(\sigma^{} 1 s)^{2},(\sigma 2 s)^{2},(\sigma^{} 2 s)^{2}$,
B.O.
Hence, option (2) should be the right answer.