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Conformations of Butane

The fully ecl...

Question

The fully eclipsed conformation of n-butane is least stable due to the presence of?

Bond opposition strain only

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steric strain only

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Bond opposition strain as well as steric strain

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no strain is present in the molecule

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Solution

The correct option is C steric strain only

Fully eclipsed form of $n$ -butane has $2$ methyl groups at the back of each other, making it least stable due to steric strain.
(Refer to Image)

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