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Question

Which one of the following is known as σπ resonance?

A
Resonance effect
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B
Hyperconjugation
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C
Inductive effect
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D
Electromeric effect
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Solution

The correct option is B Hyperconjugation
Hyperconjugation is also known as σπ resonance. Delocalisation of electron with the participation of bonds of primarily sigma character is known as hyperconjugation. It involves the interaction of σ electrons with the adjacent molecular orbitals

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