Chemical Bonding Result Question 13

13. Hyperconjugation involves overlap of which of the following orbitals?

(2008, 3M)

(a) $\sigma-\sigma$

(b) $\sigma-p$

(c) $p-p$

(d) $\pi-\pi$

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Answer:

Correct Answer: 13. ( b )

Solution:

<img src=“https://cdn.mathpix.com/snip/images/znLpSQUT2yviHpT3HsE3P_Jg583H3DT8OWVPPKblQOg.original.fullsize.png"width="320px"/>

I and II are hyperconjugation structures of propene and involves $\sigma$ -electrons of $\mathrm{C}-\mathrm{H}$ bond and $p$ -orbitals of pi bond in delocalisation.