How does the atomic radius of the elements change on going(i) from lef

1.	How does the atomic radius of the elements change on going(i) from left to right in a period, and(ii) down a group in the Modern Periodic Table ? Give reason in support of your answer
Answer» (i) Atomic radius decreases Reason: Nuclear charge increases which tends to pull the electrons closer to the nucleus. (ii) Atomic radius increases Reason: Number of shells increases on going down the group.

How does the atomic radius of the elements change on going(i) from left to right in a period, and(ii) down a group in the Modern Periodic Table ? Give reason in support of your answer

Answer»

(i) Atomic radius decreases

Reason: Nuclear charge increases which tends to pull the electrons closer to the nucleus.

(ii) Atomic radius increases

Reason: Number of shells increases on going down the group.