# What is the condensed structural formula for the compound 3-hexene?

May 21, 2015

The condensed structural formula for hex-3-ene is ${\text{CH"_3"CH"_2"CH=CHCH"_2"CH}}_{3}$.

The stem name –hex- tells us that we have a chain of six carbon atoms.

$\text{C-C-C-C-C-C}$

The -ene tells us that we have a $\text{C=C}$ double bond and the -3- tells us that it is between C-3 and C-4.

$\text{C-C-C=C-C-C}$

Since there are no other substituents, we fill up the unused valences of $\text{C}$ with hydrogen atoms to get a condensed structural formula.

${\text{CH"_3"-CH"_2"-CH=CH-CH"_2"-CH}}_{3}$

Single bonds are often omitted in condensed structural formulas, so another acceptable answer would be

${\text{CH"_3"CH"_2"CH=CHCH"_2"CH}}_{3}$