Question

How the atomic size vary in a group and across a periods? Explain with suitable example​

Answer 1

Answer:along the period the nuclear charge increases with increase in atomic no thus atomic size decrease along a period.

But down the group atomic orbitals are added due to which the size increases.

Explanation:

Answer 2

Explanation:

atomic size increase in groups while going down of the group

ex=group 1 atomic size increase

atomic size slightly decrease in period while going left to right