Give the IUPAC and common name of vinyl cyanide `(CH_2=CHCN)`.

Explanation

To determine the IUPAC and common names of vinyl cyanide (CH₂=CHCN), we can follow these steps:

### Step 1: Identify the Structure
The molecular formula CH₂=CHCN indicates that we have a vinyl group (CH₂=CH-) attached to a cyano group (-CN).

### Step 2: Count the Carbon Atoms
In the structure, we have:
- 2 carbon atoms from the vinyl group (CH₂=CH)
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