Which of the following compounds will exhibit geometrical isomerism?

Question

Which of the following compounds will exhibit geometrical isomerism? (A) 3-phenyl-1-butene (B) 1-phenyl-2-butene (C) 2-phenyl-1-butene (D) 1, 1-diphenyl-1-propene

Tardigrade Admin · Accepted Answer

1-phenyl-2-butene shows geometrical isomerism in the form of cis and trans isomers. However, the geometrical isomerism is not possible for 3-phenyl-1-butene, 2-phenyl-1-butene and 1,1-diphenyl-1-propane. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/b22dba92eaaaca72379cfaf705692995-.png" />

Q. Which of the following compounds will exhibit geometrical isomerism?

3-phenyl-1-butene

1-phenyl-2-butene

2-phenyl-1-butene

1, 1-diphenyl-1-propene

$1$ -phenyl- $2$ -butene shows geometrical isomerism in the form of cis and trans isomers. However, the geometrical isomerism is not possible for $3$ -phenyl- $1$ -butene, $2$ -phenyl- $1$ -butene and $1, 1$ -diphenyl- $1$ -propane.