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4.Chemical Bonding and Molecular Structure
hard
In which of the following ionization processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic.
A
$O_2 \rightarrow O_2^+$
B
$C_2 \rightarrow C_2^+$
C
$NO \rightarrow NO^+$
D
$N_2 \rightarrow N_2^+$
(NEET-2013)
Solution
In $C_{2}-C_{2}^{+}$ electrons is removed from bonding molecular orbital so bond order decreases.
In $N O \rightarrow N O^{+}$ electrons is removed from anti bonding molecular orbital so bond order increases and nature changes from paramagnetic to diamagnetic.
Standard 11
Chemistry
