How do atomic radius vary in a period and in a group? How do you explain the variation?

How does atomic radius vary in a period and in a group? How do you explain the variation.

How does atomic radius vary in a period and in a group? How do you explain the variation?

How do atomic radii vary in a period and in a group? How do you explain the variation?

What do atomic radius vary in a peiod and ini a group? How do you explain the variation?

How does atomic radius vary down a group and along a period?

How does the atomic radius vary in a period of elements?

How do atomic radius generally vary in a period and in a group for s-and p- block elements ? How do you explain the variation?