Unpaired electrons are present in:

B a O_{2}

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K O_{2}

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K_{2} O

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N a_{2} O_{2}

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Solution

The correct option is C $K O_{2}$
The super oxide ion contains a three electron bond. Thus it contains unpaired electron and is paramagnetic. Hence potassium superoxide ( $K O_{2}$ ) contains unpaired electron.

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Similar questions

Among $K O_{2}, N a_{2} O$ and $B a O_{2}$ unpaired electron(s) is/are present in:

K O_{2}, A l O_{2}^{-}, B a O_{2}

N O_{2}^{+}

Among $K O_{2}$ , ${A l O_{2}}^{-}$ , $B a O_{2}$ , ${N O_{2}}^{+}$ unpaired electron is present in:

K O_{2}, A l O_{2}^{-}, B a O_{2}, a n d N O_{2}^{+}

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