What are the characteristics of Homologue series

What are the characteristics of Homologue series? 

Answer: Important characteristics of Homologue series are: 

1. Have same general formula. 

2. Belong to same functional group. 

3. Have general methods of separation. 

4. Have similar chemical properties. 

5. Show similar gradation of physical properties. 

e.g. boiling points of alcohol increase with increase in their molecular weights. 

6. Similarly solubility decreases with increase in molecular weights.