Chapter 21, Problem 27E

Interpretation Introduction

Interpretation: The structural and the geometrical (i.e. cis-trans) isomers of ${\text{C}}_{\text{3}}{\text{H}}_{\text{5}}\text{Cl}$ needs to be drawn.

Concept introduction: Molecules having same molecular formula but different arrangement of atoms in space are termed as structural isomers. Cis-trans isomerism is also known as configurational or geometrical isomerism. The prefixes cis and trans are Latin words in which ‘‘cis’’ represents ‘‘this side of’’ and ‘‘trans’’ represents ‘‘the other side’’. This type of isomerism occurs in unsaturated compounds (i.e. double bonds) or cyclic compounds depending on the presence of substituted groups in a molecule.