Write the IUPAC names of the following:
`CH_3 - C -= CH`

Explanation

To write the IUPAC name for the compound \( CH_3 - C \equiv CH \), we will follow these steps:

### Step 1: Identify the longest carbon chain
The given compound has three carbon atoms connected in a chain. The structure can be represented as follows:
- The first carbon (C1) has three hydrogen atoms (CH3).
- The second carbon (C2) is connected to the first carbon and has a triple bond with the third carbon (C3).
- The third carbon (C3) is connected to the second carbon and has one hydrogen atom (CH).

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