Q.
(a) Draw Newman's projection for the less stable staggered
form of butane.
(b) Relatively less stability of the staggered form is due to
(i) Torsional strain
(ii) van der Waals' strain
(iii) Combination of the above two
Solution:
(b) The less stability of above mentioned conformer is due to
van der Waals' repulsion between the adjacent methyl groups.
