Q.
The hyperconjugative stabilities of tert-butyl cation and 2-butene, respectively, are due to
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a
σ→p empty and σ→π* electron delocalissations
b
σ→σ* and σ→π electron delocalissations
c
σ→p filled and σ→π electron delocalisations
d
p filled → σ* and σ →π* electron delocalisations
answer is A.
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Detailed Solution
In tert -butyl cation, carbon bearing positive charge has one vacant p-orbital hence it is σ−p (empty) conjugation or hyperconjugation.In 2-butene, hyperconjugate is between σ−π* bond.
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