Question

Which of the following does not exhibit geometrical isomerism?

• A. 4-octene
• B. 2-pentene
• C. 3-hexene
• D. 1-hexene

Answer 1

The correct option is D 1-hexene

There are no geometrical or cis-trans isomers for 1-hexene, as the alkene functional group is present on the first carbon.

There is no carbon chain on the other side of the carbon. cis-trans isomerism exists when there is restricted rotation in a molecule and there are two non-identical groups on each doubly bonded carbon.