Q. Which of the following has the maximum atomic radius?
✅ Correct Answer: (D)
Rubidium
Explanation: Atomic radius increases down a group due to the addition of new electron shells. Hence, rubidium has the largest atomic radius among the given elements.
Explanation by: Jyoti
Atomic radius increases down a group due to the addition of new electron shells. Hence, rubidium has the largest atomic radius among the given elements.