Question

how does the atomic size very as we go down in a group?​

Answer 1

increases beacuse nuclear charge decreases

i hope it will help u

Answer 2

Atomic size Increases down the group. This is because, new shells are being added as we go down the group, it increases the distance between the outermost electrons and the nucleus. As a result, the atomic size increases in spite of the increase in nuclear charge..

Hope it helps:)