Write the IUPAC name of the following compounds :
`H- underset(H)underset(|)overset(H)overset(|)C-C -= C-H`

Explanation

To determine the IUPAC name of the given compound, we will follow these steps:

### Step 1: Identify the Structure
The compound is represented as:
```
H - C ≡ C - C - H
```
This indicates that we have a chain of three carbon atoms, with a triple bond between the first and second carbon atoms.
...