${{\rm{N}}_2}$ and ${{\rm{O}}_2}$ are converted into monocations, ${\rm{N}}_2^ + $ and ${\rm{O}}_2^ + $ respectively. Which of the following is wrong?

In ${\rm{N}}_2^ + ,{\rm{N}} - {\rm{N}}$bond weakens

In ${\rm{O}}_2^ + ,$,the ${\rm{O}} - {\rm{O}}$ bond order increases

In ${\rm{O}}_2^ + $, paramagnetism decreases

JEE CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

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Analyzing +4 | -1

{\mathrm{N}_2}

and

{\mathrm{O}_2}

are converted into monocations,

\mathrm{N}_2^ +

and

\mathrm{O}_2^ +

respectively. Which of the following is wrong?

View answer and explanation

Correct option: D

\mathrm{N}_2^ +

become diamagnetic

Option D (

\mathrm{N}_2^ +

become diamagnetic) is wrong because the removal of an electron from

N_2

(which is diamagnetic) results in

N_2^+

which is paramagnetic due to the presence of an unpaired electron.