Write the IUPAC name of the following compound :
`CH_(2) = CHCH_(2) Br`

Explanation

To write the IUPAC name of the compound `CH₂=CHCH₂Br`, we will follow these steps:

### Step 1: Identify the longest carbon chain
The compound has three carbon atoms connected in a chain. The structure can be represented as:
```
H Br
| |
H₂C=C-CH₂
...