Question

Why does staggered form are more stable than eclipsed form?

Answer 1

In terms of stability, thestaggered conformation is more stable than the eclipses. This isfor two reasons: ... In the eclipsed conformation, the positioning of the atoms forces them closer together, increasing the amount of steric strain in the molecule.

Answer 2

A staggered conformer is more stable than an eclipsed conformer as the latter involves unfavourable energy interactions between atoms. ... The staggered conformation with the dihedral angle of 60o , where the H atoms on the 1st carbon are at maximum separation from H atoms on the 2nd carbon.