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  • According to molecular orbital theory, the number of unpaired electron (s) in is_________.Option: 1 0Option: 2</b

According to molecular orbital theory, the number of unpaired electron (s) in \mathrm{O}_{2}^{2-} is_________.
 

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The molecular orbital configuration of  \mathrm{O_{2}^{2-}}  is

\sigma_{1 s}^{2} \sigma_{1 s}^{* 2} \sigma_{2 s}{ }^{2} \sigma_{2 s}^{* 2} \sigma_{2 p_{z}}^{2} \pi_{2 p_{x}}^{2}=\pi_{2 p_{y}}^{2} \pi_{2 p_{x}}^{*^{2}}=\pi_{2 p_{y}}^{*2}

Hence \mathrm{O_{2}^{2-}}  is diamagnetic and contains no unpaired electrons

Hence the correct answer is 0

Posted by

sudhir.kumar

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