# How many structural isomers can be drawn for C5H10?

There are three isomers: $\text{n-pentane}$; $\text{isobutane}$; and $\text{neopentane}$.
$\text{n-pentane}$ ${H}_{3} C - C {H}_{2} C {H}_{2} C {H}_{2} C {H}_{3}$
$\text{isobutane}$ ${H}_{3} C - C H \left(C {H}_{3}\right) C {H}_{2} C {H}_{3}$
$\text{neopentane}$ ${\left({H}_{3} C\right)}_{4} C$