Question

How many structural isomers are possible for ${\mathrm{C}}_4{\mathrm{H}}_9\mathrm{Br}$?

Answer 1

Isomers are two molecules with the same molecular formula but differ structurally.

• There are two main types of isomers, structural isomers, and stereoisomers.

Structural isomers-Structural isomers differ with regard to the specific attachment of atoms and functional groups.

Stereoisomers-It refers to isomers that share an identical bond structure but differ with regard to the geometric position of the functional groups and atoms.

1. The compound ${\mathrm{C}}_4{\mathrm{H}}_9\mathrm{Br}$ is an alkyl halide and has four carbon atoms so the parent straight-chain will be butane and $\mathrm{Br}$is the substituent.
2. There are four carbon atoms in the parent chain that will be butane and placed the $\mathrm{Br}$in the first carbon of the parent chain.
3. There are four structural isomers possible.