Which of the following molecules is not param | vedclass

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Question

(D) If all the electrons are paired,the molecule is diamagnetic,while if one or more electrons in a molecule are unpaired,the species is paramagnetic.

Vedclass · Accepted Answer

$O_2^{2-}$

Vedclass · Answer

(D) If all the electrons are paired,the molecule is diamagnetic,while if one or more electrons in a molecule are unpaired,the species is paramagnetic. $O_2^{2-}$ is not paramagnetic because in $O_2^{2-}$ all the electrons are paired. Configuration of $O_2^{2-}$ (Total electrons $= 18$): $(\sigma 1s)^2, (\sigma^* 1s)^2, (\sigma 2s)^2, (\sigma^* 2s)^2, (\sigma 2p_z)^2, (\pi 2p_x)^2, (\pi 2p_y)^2, (\pi^* 2p_x)^2, (\pi^* 2p_y)^2$. Since all electrons are paired,$O_2^{2-}$ is diamagnetic.

Which of the following molecules is not paramagnetic in nature?

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