Question

Whst is meant by atomic radius ? Explain why it decrease across the period

Answer 1

the distance between the nucleus and it's outermost Shell is known as atomic radius...It decreases across the period because the nuclear charge increases enabling the nucleus to pull the shell more towards itself

Answer 2

The distance between the nucleus and it's outermost Shell is known as atomic radius.

It decreases across the period because the nuclear charge increases enabling the nucleus to pull the shell more towards itself.

Hope it helps you!