MolSynapsequestion bank

MolSynapse / Question bank / General Organic Chemistry I: Electronic Effects / Hyperconjugation

NEET levelSingle correct optionDifficulty 1 of 3g1116

Hyperconjugation in propene involves the delocalisation of electrons of the

Alone pair of carbon into the $π$ bond
B $σ$ electrons of the $C = C$ into the methyl group
C $σ$ bond of the $C - H$ of $CH X_{3}$ into the adjacent $π$ system
D $π$ bond into the $σ$ bond of $C - C$ only

Answer: C

In propene the alpha C-H sigma electrons overlap with the neighbouring pi orbital of

C = C

and partly delocalise into it. This sigma-pi overlap is hyperconjugation.

Practice General Organic Chemistry I: Electronic Effects More on Hyperconjugation

Previous questionNext question

More questions on Hyperconjugation