Question

Does Si or Sn have the smallest atomic radius? Explain your answer using Coulombs Law.

Answer 1

Answer/Explanation:

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.