Question

Which conformation of butane will have the
minimum energy
(1) Gauche
(2) Anti/staggered
(3) Eclipsed
(4) None​

Answer 1

Answer:

The correct option is

(2). Anti/staggered

Explanation:

One more 60 rotation produces the 'anti' conformation, where the two methyl groups are positioned opposite each other and steric repulsion is minimized. This is the lowest energy conformation for butane.

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