Write the possible conformations of ethane and explain which is more stable.

Explanation

Conformations: As a result of rotation about single C-C bond, the atoms or groups of a molecule assume different spatial arrangements. These different atomic arrangements are called 'conformations'.
Ex : Eclipsed (E) and staggered (S) conformations of ethane.

Staggered conformation is more stable than eclipsed because in eclipsed conformation the hydrogen atoms are nearer and repel cach other. But in staggered conformation the hydrogen atoms are at maximum possible distance, So it is more stable.