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  4. Which one of the following does not exhibit paramagnetism?

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Q. Which one of the following does not exhibit paramagnetism?

NTA AbhyasNTA Abhyas 2020Chemical Bonding and Molecular Structure

Solution:

NO, $NO_{2}$ and $ClO_{2}$ all have odd number of electrons and therefore are expected to paramagnetic. $ClO_{2}^{-}$ have even number of electrons $\left(\right.17+35=52\left.\right)$ , so it may be diamagnetic.