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Resonance Effect

Rank the foll...

Question

Rank the following bonds of $C O_{3}^{2 -}$ in decreasing order of their bond length

A

I > I I > I I I

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B

I I I > I I > I

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C

I = I I = I I I

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D

I I = I I I > I

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Solution

The correct option is C $I = I I = I I I$
Resonating structures of $C O_{3}^{2 -}$ is as follows :
All the three resonating structures of $C O_{3}^{2 -}$ are equivalent resonating structures.
So all the $C - O$ bond lengths will be equal.
Correct order is :
$I = I I = I I I$
Resonance hybrid of $C O_{3}^{2 -}$ is :

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Resonance Effect

Standard XII Chemistry

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