Question

Removal of electron becomes easier on moving down the group. 

1. Comment the above statement based on ionization enthalpy. 

2. How electronic configuration influences the ionization enthalpy value?

Answer 1

1. On moving from top to bottom in a given group, size of the atom increases and ionisation enthalpy decreases. Hence, it becomes easier to remove the valence electron.

2. Atoms with octet configuration, half-filled and completely filled configurations have extra stability and hence have higher values of ionization enthalpy.