Which of the following compounds can exist as geometric isomers?

Som15432

1 year ago

The compound that can exist as geometric isomers among the options is B. But-2-ene.
Geometric isomers
(cis-trans isomers) arise from the restricted rotation around a double bond. For a molecule to exhibit geometric isomerism, each carbon of the double bond must be attached to two different groups.
But-2-ene
(CH₃CH=CHCH₃) has two different groups (CH₃ and H) attached to each carbon of the double bond, allowing for cis and trans isomers.
2-methylbut-2-ene
((CH₃)₂C=CHCH₃) does not show geometric isomerism because one carbon of the double bond has two identical methyl groups attached.
But-1-ene
(CH₂=CHCH₂CH₃) does not exhibit geometric isomerism because one carbon of the double bond has two hydrogen atoms attached.
Cl-C-Br
is not a correct representation of a molecule. A more appropriate representation could be ClCH=CHBr, which can have geometrical isomers. However, based on the options provided, only But-2-ene is correct.

kknellie

3 years ago

Why is it B?
Shouldn’t it be A?