Chemistry

Question Analysis
This question assesses the understanding of atomic radius trends within a specific period in the periodic table.

Key Concept Explanation
In a given period, the atomic radius generally decreases from left to right due to increasing nuclear charge, which pulls the valence electrons closer to the nucleus.

Step-by-step Solution
1. Identify the period: Period 5.
2. Recall the trend: Atomic radius decreases from left to right across a period.
3. Determine the element with the largest atomic radius: Rb ...