If the magnetic moment of a dioxygen species is 1.73 B.M, it may be:

O_{2,} O_{2}^{-} o r O_{2}^{+}

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O_{2}^{-} o r O_{2}^{+}

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O_{2} o r O_{2}^{-}

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O_{2} o r O_{2}^{+}

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Solution

The correct option is B $O_{2}^{-} o r O_{2}^{+}$
$O_{2} : σ_{1 s^{2}} σ_{1 s^{2}}^{} σ_{2 s^{2}} σ_{2 s^{2}}^{} σ_{2 p_{z}^{2}} π_{2 p_{x}^{2}} = π_{2 p y^{2}} π_{2 p_{x}^{1}}^{} = π_{2 p_{y}^{1}}^{}$
$O_{2}^{-} : σ_{1 s^{2}} σ_{1 s^{2}}^{} σ_{2 s^{2}} σ_{2 s^{2}}^{} σ_{2 p_{z}^{2}} π_{2 p_{x}^{2}} = π_{2 p y^{2}} π_{2 p_{x}^{2}}^{} = π_{2 p_{y}^{1}}^{}$
$O_{2}^{+} : σ_{1 s^{2}} σ_{1 s^{2}}^{} σ_{2 s^{2}} σ_{2 s^{2}}^{} σ_{2 p_{z}^{2}} π_{2 p_{x}^{2}} = π_{2 p y^{2}} π_{2 p_{x}^{1}}^{} = π_{2 p_{y}^{0}}^{}$

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