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Conformational Isomerism

Question

Which of the following is the most stable form of cyclohexane?
Boat form
Chair form
Half chair form
Half boat form

A

Chair form

B

Half boat form

C

Half chair form

D

Boat form

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Solution

Verified by Toppr

The most stable conformation of cyclohexane is the chair form.

The C-C-C bonds are very close to ${109.5}^{o}$ , so it is almost free of angle strain.

It is also a fully staggered conformation and so is free of torsional strain.

Option B is correct.

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