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Which of the following will have least h...

Which of the following will have least hindered rotation about carbon-carbon bond?

A

Ethane

B

Ethylene

C

Acetylene

D

Hexachloroethane

Text Solution

Verified by Experts

The correct Answer is:
A
Free rotation around carbon–carbon bond takes place easily in alkanes. Now ethane and hexachloroethane both are alkanes. But in hexachloroethane bulky chlorine atom hinders the rotation. Therefore least hindered rotation takes place in ethane. 52
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