Question

How does atomic radii varies in a group and along a period?

Answer 1

Answer:

Atomic radius of the elements generally decreases from left to the right in a period because on moving from left to right in aperiod the nuclear charge gradually increases by one unit & one electron is also added in the electron shell.Due to this the electrons get attracted more & more towards the nucleus.

Explanation:

Answer 2

hi Friend

Atomi radius decrease across period and increase along group.

It is because nuclear charge increase along period but no. of shell increases along group.

hope you understood