Question

Arrange the following molecules in the increasing order of $\alpha$ to $\pi$ bond ratio?

• A. (2)<(3)<(4)<(1)
• B. (2)<(4)<(3)<(1)
• C. (3)<(2)<(1)<(4)
• D. (2)<(3)<(1)<(4)

Answer 1

The correct option is C (3)<(2)<(1)<(4)

Each double bond contains 1 σ bond and 1 π bond.

Note: In each structure, C−H, C−C and C=C contributes to the σ bond and π bond is only contributed by the C=C bond.

Option C is correct.