Question

Atomic radius goes on increasing down a group. Write scientific reasons for it.

Answer 1

The number of energy levels increases as you move down a group as the number of electrons increases. Each subsequent energy level is further from the nucleus than the last. Therefore, the atomic radius increases as the group and energy levels increases. ☺️

Hope it helps.

Answer 2

Answer:

Explanation:

(i) Atomic radius is the distance between the centre

of the atom to its outermost shell.

(ii) New shells are added to the atoms of the elements

as we go down from top to bottom in a group.

(iii) The outermost electrons go further and further

away from the nucleus, extending the radius and

ultimately increase in the size of the atom. Hence,

atomic radius goes on increasing down a group.