Which of the following atoms has the largest radius?

Question

Quizplus · Accepted Answer

The atomic radius increases as we move down a group (vertical column) in the periodic table because additional energy levels are being added. Among the given options, Xenon is located at the bottom of Group 18 (Noble gases) and has the largest atomic radius. Helium has the smallest radius because it belongs to Group 2 (Non-metals) and has the fewest energy levels. Neon, Krypton, and Argon have progressively larger radii than Helium, but still smaller than Xenon due to their higher position in the same group.

Which of the Following Atoms Has the Largest Radius