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Hyperconjugation

Which of the ...

Question

Which of the following $σ$ -bonds participate in hyperconjugation?

A

I

and

I I

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B

I I

and

V

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C

I

and

I I I

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D

I

and

V

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Solution

The correct option is A $I$ and $I I$
Hyperconjugation involves the interaction of σ electrons with the adjacent molecular orbitals.
For hyperconjugation : $α$ -hydrogen should be there.
$I$ and $I I$ participate in hyperconjugation as they are $α$ -hydrogens.

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Hyperconjugation

Standard XII Chemistry

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