Carbon-carbon double bond in alkenes consists of: - Vidyadip

MCQ

Carbon-carbon double bond in alkenes consists of:

A
one strong sigma $(\sigma)$ bond due to head-on overlapping of $sp ^3$ hybridised orbitals one weak pi $(\pi)$ bond.
✓
one strong sigma $(\sigma)$ bond due to head-on overlapping of $sp ^2$ hybridised orbitals one weak pi $(\pi)$ bond.
C
one weak sigma $(\sigma)$ bond due to head-on overlapping of $sp ^2$ hybridised orbitals one weak pi $(\pi)$ bond.
D
one weak sigma $(\sigma)$ bond due to head-on overlapping of $sp ^3$ hybridised orbitals one weak pi $(\pi)$ bond.

✓

Answer

Correct option: B.

one strong sigma $(\sigma)$ bond due to head-on overlapping of $sp ^2$ hybridised orbitals one weak pi $(\pi)$ bond.

(b) one strong sigma $(\sigma)$ bond due to head-on overlapping of $sp ^2$ hybridised orbitals one weak pi $(\pi)$ bond.
Explanation: Sigma bond is formed by the head-on overlap of $sp ^2$ hybridized orbitals while the pi bond is formed by lateral or sideways overlapping of the two 2p-orbitals of the two carbon atoms. Alkenes contain 1 weak pi bond and 1 strong sigma bond.

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