Chemistry

Question Analysis
This question evaluates the understanding of the trend in atomic radius as you move down a group in the periodic table.

Key Concept Explanation
As you move down a group in the periodic table, the atomic radius increases due to the addition of new electron shells. The increased principal quantum number (n) and electron shielding outweigh the effect of the increased nuclear charge.

Step-by-step Solution
1. Identify the trend in atomic radius as you move down a group.
2. Recall that the addition of new electron shells increases the distance between the nucleus and the outermost electrons.
3....