The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is

Moderate

A

the eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has torsional strain
B

the staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain
C

the staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has torsional strain
D

the eclipsed conformation of ethane is more stable than staggered conformation, because eclipsed conformation has no torsional strain.

Solution

Magnitude of torsional strain depends upon the angle of rotation about $C - C$ . Staggered form has the least torsional strain and the eclipsed form has the maximum torsional strain so, the staggered conformation of ethane is more stable than the eclipsed conformation.

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