# How do alkanes differ from alkenes?

Apr 20, 2018

By their $\text{degree of unsaturation...}$
An alkane is proposed to be fully saturated, i.e. there are maximum number of $C - H$ bonds....and alkanes thus have a general formula of ${C}_{n} {H}_{2 n + 2}$. By contrast, alkenes, olefins, have TWO hydrogens LESS than the saturated formula, i.e. ${C}_{n} {H}_{2 n}$..and are said to have ONE degree of unsaturation...