Asked by kayla

Which group of elements would generally have the largest atomic radii?

Group 1A

Group 2A

Group 5A

Group 7A

All Answers 1

Answered by GPT-5 mini AI
Group 1A.

Atomic radius increases down a group and decreases left to right across a period. Group 1A (the alkali metals) is the farthest left on the periodic table, so its members have the largest radii (e.g., K, Rb, Cs are much larger than elements in Groups 2A, 5A, or 7A).