The most stable conformation of 1,2-dibromoethane is:

Question

Quizplus · Accepted Answer

The most stable conformation of 1,2-dibromoethane is the one where the two bulky bromine atoms are oriented in the opposite direction. In choice III, the two bromine atoms are in the anti position with respect to each other, which minimizes steric hindrance between them. In contrast, choices I, II, IV, and V all have the bromine atoms in the gauche position, which leads to higher energy due to steric hindrance between them. Therefore, choice III is the most stable conformation of 1,2-dibromoethane.

The Most Stable Conformation of 1,2-Dibromoethane Is