Name the first member of Alkynes.

Explanation

To determine the first member of the alkyne family, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Alkynes**: Alkynes are unsaturated hydrocarbons that contain at least one carbon-carbon triple bond (C≡C).

2. **Know the General Formula**: The general formula for alkynes is given by CnH2n-2, where 'n' is the number of carbon atoms.

3. **Determine the Value of 'n' for the First Member**:
- For the first member of the alkyne family, we need to find the smallest value of 'n' that allows for a carbon-carbon triple bond.
- If we set n = 1, we calculate:
- C1H2(1)-2 = C1H0
- This does not represent a valid alkyne since it does not have a carbon-carbon bond.

4. **Calculate for n = 2**:
- Now, we set n = 2:
- C2H2(2)-2 = C2H2
- This represents a molecule with 2 carbon atoms and 2 hydrogen atoms.

5. **Identify the Compound**: The compound C2H2 is known as ethyne, which is commonly referred to as acetylene.

6. **Conclusion**: Therefore, the first member of the alkyne family is ethyne (C2H2).

### Final Answer:
The first member of the alkyne family is **ethyne (C2H2)**.

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