Name the 5th member of Alkene and Alkane series.

Explanation

To find the fifth member of the alkene and alkane series, we need to understand the general formulas for both series.

### Step-by-Step Solution:

1. **Identify the General Formulas:**
- The general formula for alkenes is \( C_nH_{2n} \).
- The general formula for alkanes is \( C_nH_{2n+2} \).

2. **Determine the Value of n for the Fifth Member:**
- For both series, the fifth member corresponds to \( n = 5 \).

3. **Calculate the Fifth Member of the Alkene Series:**
- Substitute \( n = 5 \) into the alkene formula:
\[ C_5H_{2(5)} = C_5H_{10} \]
- The fifth member of the alkene series is **pentene**.

4. **Calculate the Fifth Member of the Alkane Series:**
- Substitute \( n = 5 \) into the alkane formula:
\[ C_5H_{2(5)+2} = C_5H_{12} \]
- The fifth member of the alkane series is **pentane**.

### Final Answer:
- The fifth member of the alkene series is **pentene**.
- The fifth member of the alkane series is **pentane**.