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Preparations and Reactions of Sodium Oxide

Superoxides o...

Question

Superoxides of alkali metals act as oxidising agents while normal oxides are basic in nature. The oxide which is paramagnetic in nature due to presence of unpaired electron is :

A

N a_{2} O_{2}

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B

K O_{2}

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C

N a_{2} O

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D

K_{2} O_{2}

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Solution

The correct option is C $K O_{2}$
Here $K O_{2}$ is superoxide and it is paramagnetic in nature.
Superoxides are paramagnetic in nature due to presence of one unpaired electron in antibonding $π^{*} 2 p$ molecular orbital.

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