Question

State the characteristics of groups in the periodic table.

Answer 1

Vertical columns in the periodic table starting from top to bottom are called groups. There are 18 groups in the periodic table.

All elements in any group of the periodic table show:

1. Similar properties due to similar outer electronic configuration

2. A gradual change in the properties is observeddue to decreasing attraction between the nucleus and the valence electrons as we move down the group.

3. The elements present in a group have the same valency.

4. The elements present in a group have identical chemical properties.

5. The physical properties of the elements in a group such as melting point, boiling point and density vary gradually.