# Question #1c217

Mar 14, 2017

$\text{n-butane}$ DOES NOT generate any geometric isomers.......
And nor does $\text{isobutane}$, ${\text{H"_3"CCH(CH"_3")CH}}_{3}$.
However, $\text{2-butylene}$ can generate cis and trans isomers as shown:
These are GEOMETRIC isomers, because the $C - C$ connectivity is IDENTICAL for each isomer: $C 1$ connects to $C 2$.........to $C 4$. Their different geometry gives rise to different physical and chemical properties.