Question

3. The number of shells is
down
the group
​

Answer 1

The number of shells

down the group remains Same.

Answer 2

Answer:

(1) number of shells of elements as we go down group

(2) number of valence electrons of elements on moving from left to right in a period

(3) atomic radius in moving from left to right in a period.

(4) atomic size down a group.

hope it's helpful for you