What is expected to show paramagnetism?

C l O_{2}

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S O_{2}

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C O_{2}

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S i O_{2}

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Solution

The correct option is B $C l O_{2}$
$C l O_{2}$ has 33 electrons. It has one unpaired electron.
Hence, it is paramagnetic in nature.
On the other hand, in $S O_{2}$ , $C O_{2}$ and $S i O_{2}$ all the electrons are paired.
Hence, it is diamagnetic.

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