Question

(a) List four characteristics of homologous series. (b) Draw the electron dot structure of carbon dioxide.

Answer 1

Homologous Series : Homologous series is a group of organic compounds having similar structures and similar chemical properties in which the successive compounds differ by  OR 14 u.

Characteristics of Homologous Series :

1) All the members of a homologous series can be represented by the same general formula.

2) Any two adjacent homologous differ by 1 carbon atom and 2 hydrogen atoms in their molecular formula.

3) The difference in the molecular masses of any two adjacent homologous is 14 units.

4) All the compounds of a homologous series show similar chemical properties.

5) The members of a homologous series show a gradual change in their physical properties with increase in molecular mass.

Answer 2

Answer:

The members of the homologous series have same functional group.

Members have the same general formula.

Members have the almost same chemical properties due to same functional group.

Members have common general method of preparation.