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Question

In which of the following ionization processes, the bond order has increased and the magnetic behaviour has changed?


A
N2N+2
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B
C2C+2
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C
NONO+
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D
O2O+2
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Solution

The correct option is D $$NO\rightarrow NO^{+}$$
A) Going from $$N_2$$ to $$N_2^+$$, bond order decreases from 3 to 2.5.
B) Going from $$C_2$$ to $$C_2^+$$, bond order decreases from 2 to 1.5.
C) Going from $$NO$$ to $$NO^+$$, bond order increases from 2.5 to 3, and the magnetic behavior changes from paramagnetic to diamagnetic.
D) Going from $$O_2$$ to $$O_2^+$$, bond order increases from 2 to 2.5, but magnetic behavior does not change. Both of these species are paramagnetic.

Chemistry

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