Assertion: Staggered form is less stable than the ecliped form
Reason: The conformation in which the bond pairs of two central atoms are very far from one another is called stagered form.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true and the reason is the correct explanations of the assertion
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer

D

Explanation

The staggered form is more stable than the eclipsed form because the potential energy of staggered form in which the bond pairs of two carbons are far away from each other is minimum. Also the `H`-atoms are as far apart as possible and nonbonded interaction between them is maximum. In occupied form, the `H` -atom are very close and so increased there is an overlap between them and non bonded orbitals are repulsive. that it why staggered form is more stable than occupied form.