Give the IUPAC names of the `CH_2 = CH - CH_3`

Explanation

To find the IUPAC name of the compound `CH₂=CH-CH₃`, we can follow these steps:

### Step 1: Write the Structure
First, let's write down the structure of the compound in its expanded form:
- The compound consists of three carbon atoms connected in a chain, with a double bond between the first and second carbon atoms.

### Step 2: Identify the Longest Carbon Chain
Next, we need to identify the longest continuous chain of carbon atoms:
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