Question

In the given three conformational isomers which of the following has minimum torsional strain and minimum van der Waals strain.

• A.
• B.
• C.
• D. All of the above.

Answer 1

The correct option is B

'a' and 'c' are eclipsed so maximum repulsions and have maximum torsional strain.
'b' is staggered so most stable and minimum repulsions and have minimum torsional strain