# How many stereoisomers are there of 1,2-dibromopropene?

Oct 13, 2015

There are two stereoisomers of 1,2-dibromopropene.

#### Explanation:

The formula of 1,2-dibromopropene is $\text{CH"_3"CBr=CHBr}$.

Each alkene carbon has two different groups, so the molecule can exhibit $E / Z$ isomerism.

The $\text{Br}$ atoms can be on the same side or on opposite sides of the double bond.

The first structure is ($E$)-1,2-dibromopropene, and the second structure is ($Z$)-1,2-dibromopropene.