What meant by homologous series ? What are its characterstics?

Explanation

### Step-by-Step Solution:

**Step 1: Definition of Homologous Series**
A homologous series is a group of organic compounds that share the same general formula and have similar chemical properties. The compounds in this series differ from each other by a constant unit, typically a -CH2- group.

**Step 2: Example of a Homologous Series**
For example, consider the alkane series:
- The general formula for alkanes is CnH2n+2.
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