Which among the following pair contain both paramagnetic species:-

O_{2}^{2 -} a n d N_{2}^{-}

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O_{2}^{-} a n d N_{2}

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O_{2} a n d N_{2}

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O_{2} a n d N_{2}^{-}

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Solution

The correct option is D $O_{2} a n d N_{2}^{-}$
$O_{2} \to σ 1 s^{2} σ^{} 1 s^{2} σ 2 s^{2} σ^{} 2 s^{2} σ 2 P_{z}^{2} {\begin{matrix} π 2 P_{y}^{2} π 2 P_{x}^{2} \end{matrix}} {\begin{matrix} π^{} 2 P_{y}^{1} π^{} 2 P_{x}^{1} \end{matrix}}$
$O_{2}$ has a unpaired electrons
$N_{2}^{-} \to σ 1 s^{2} σ^{} 1 s^{2} σ 2 s^{2} σ^{} 2 s^{2} {\begin{matrix} π 2 P_{y}^{2} π 2 P_{x}^{2} \end{matrix}} σ 2 p z^{2} {\begin{matrix} π 2 P_{y}^{1} π 2 P_{x} \end{matrix}}$
$N_{2}^{-}$ has one unpaired electron

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