The magnetic moment of $K O_{2}$ at room temperature is ____ BM.

1.41

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1.73

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2.23

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2.64

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Solution

The correct option is B 1.73
Number of unpaired electrons in $K O_{2}$ or $O_{2}^{-}$ = 1
Magnetic moment = $\sqrt{n (n + 2)}$
= $\sqrt{3}$
= 1.73 BM

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