Which atom has the largest radius? sodium, chlorine, phosphorus, or neon

Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.

don't know ;-; sorry -_-_-_-

it would be d. henry moseley

hope this !

and sorry if i'm late. have a good rest of your day! : d