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Hyperconjugation

Among these a...

Question

Among these aromatic compounds the correct order of resonance energy per ring is:

I > I I > I I I

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I I I > I I > I

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I I I > I > I I

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I I > I > I I I

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Solution

The correct option is A $I > I I > I I I$
Resonance energy per ring decreases as ring size increases
So, $I > I I > I I I$ (Resonance energy/ring)
Benzene>Naphthalene>Anthracene.

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