Q38 / 170 · Manipal (MET) 2018 · Chemistry

Which of the following is paramagnetic?

Correct answer
A
$\mathrm{O}_2$
B
$\mathrm{N}_2$
C
$\mathrm{O}_2^{2-}$
D
$\mathrm{H}_2$

Solution

$\mathrm{O}_2$ has two unpaired electrons in $\pi$ molecular orbitals, hence it is paramagnetic in nature

Hence, the correct answer is option: 'A'.

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