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Decreasing order of stability of $O_{2}, O_{2}^{-}, O_{2}^{+} and O_{2}^{2 -} is$

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$O_{2}^{2 -} > O_{2}^{-} > O_{2} > O_{2}^{+}$

$O_{2} > O_{2}^{+} > O_{2}^{2 -} > O_{2}^{-}$

$O_{2}^{-} > O_{2}^{2 -} > O_{2}^{+} > O_{2}$

$O_{2}^{+} > O_{2} > O_{2}^{-} > O_{2}^{2 -}$

answer is D.

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Detailed Solution

Stability α B.O
$\begin{aligned} \propto \frac{1}{B . L} \\ \propto B . E \end{aligned}$

Species	B.O
$O_{2}^{+}$	2.5
O₂	2
${O_{2}}^{-}$	1.5
${O_{2}}^{2 -}$	1

Stability: $O_{2}^{+} > O_{2} > O_{2}^{-} > O_{2}^{2 -}$

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