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Bond Order by MOT

The bond stre...

Question

The bond strength in $O_{2}^{+}, O_{2}, O_{2}^{-}$ and $O_{2}^{2 +}$ follows the order________.

A

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

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B

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

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C

O_{2} > O_{2}^{-} > O_{2}^{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 B $O_{2}^{+} > O_{2} > O_{2}^{-} > O_{2}^{2 -}$
The bond order for $O_{2}^{2 -}, O_{2}^{-}, O_{2}, O_{2}^{+}$ are 1.0, 1.5, 2.0, 2.5, respectively. The higher is bond order,
the more is bond energy
Hence, the bond strength in $O_{2}^{+}, O_{2}, O_{2}^{-}$ and $O_{2}^{2 +}$ follows the order $O_{2}^{+} > O_{2} > O_{2}^{-} > O_{2}^{2 -}$ .

So, the correct option is $B$

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