Question

Hyperconjugation involves the overlap of which of the following orbitals?

• A. $\sigma -\sigma$
• B. $\sigma -p$
• C. $p-p$
• D. $\pi -\pi$

Answer 1

The correct option is B $\sigma -p$

Hyperconjugation involves the localization of $\sigma$ electrons of $C-H$ bond of an alkyl group directly attached to an atom of an unsaturated system or to an atom with an unshared $p$ orbital to give an extended molecular orbital that increases the stability of the system.