Question

The most stable conformation of n-butane is
(a) skew boat (b) gauche
(c) staggered-anti (d) eclipsed

Answer 1

Answer:

(C) is the answer I think

Answer 2

(c) staggered-anti  

Explanation:

The anti staggered conformation of n-butane is more stable than gauche staggered and eclipsed conformations of n-butane. In anti staggered n-butane, the methyl groups are placed at a dihedral angle of 180 degrees, and the steric hindrance is minimal in anti-form than in gauche form.

Option C is the answer.