Dihedral angle of least stable conformer of ethane is:

Dihedral angle of least stable conformer of ethane is:
A $180^\circ$
B $60^\circ$
C $0^\circ$
D $120^\circ$

Detailed Solution

The least stable conformer of ethane is the eclipsed conformation.
Dihedral angle of the eclipsed conformation = $0^\circ$ (staggered = $60^\circ$).

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