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Bond Length

Out of the fo...

Question

Out of the following, which has smallest bond length?

A

O_{2}

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B

O_{2}^{+}

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C

O_{2}^{-}

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D

O_{2}^{2 -}

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Solution

The correct option is C $O_{2}^{+}$
Bond order of the following is: $O_{2}^{2 -}$ = 1, $O_{2}^{-}$ = 1.5, $O_{2}$ = 2 , $O_{2}^{+}$ = 2.5.
increasing order of bond order is: -
$O_{2}^{2 -} < O_{2}^{-} < O_{2} < O_{2}^{+}$
therefore , the bond length is inversely proportional to the bond order.
therefore the smallest bond length in this following option B $O_{2}^{+}$

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