Question

is used as the primary suffix in the nomenclature of the compound $C{H}_2=CH-C{H}_2-C{H}_3$.

• A. -ane
• B. -ene
• C. -yne

Answer 1

The correct option is B -ene

Primary suffix is written immediately after the word root, according to the IUPAC nomenclature of an organic compound. It represents the presence of a specific type of unsaturation in the compound.

Given below are the primary suffix used for the different types of bonds that are present between the carbon atoms in a chain.

$\begin{array}{ccc}\text{Nature of Carbon Chain}& \text{Primary Suffix}& \text{Generic name}\\ \text{Saturated, C - C}& \text{-ane}& \text{Alkane}\\ \text{Unsaturated, C = C}& \text{-ene}& \text{Alkene}\\ \text{Unsaturated, C}\equiv \text{C}& \text{-yne}& \text{Alkyne}\end{array}$