Question

The dihedral angle of the most stable conformation of ethane is :

• A. $0^o$
• B. ${60}^o$
• C. ${120}^o$
• D. ${240}^o$

Answer 1

The correct option is B ${60}^o$

In ethane, the staggered form is most stable. This form exists at dihedral angle of ${60}^o$ or ${180}^o$ or ${300}^0$.

Hence, the correct option is B.