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Bond Order by MOT

In the specic...

Question

In the specices $O_{2}, O_{2}^{+}, O_{2}^{-}$ and $O_{2}^{2 -}$ , the correct decreasing order of bond strength is:

A

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

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B

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

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C

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

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D

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

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Solution

The correct option is C $O_{2}^{+} > O_{2} > O_{2}^{-} > O_{2}^{2 -}$
As the positive increases bond strength increases and negative charge increases bond strength decreases.
So the correct order of decreasing order of bond strength is $O_{2}^{+} > O_{2} > O_{2}^{-} > O_{2}^{2 -}$
Hence option $B$ is correct.

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