Question

Which group contains the elements with the largest atomic size?

Answer 1

Atomic radii vary in a predictable way across the periodic table. The atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.

Answer 2

Answer:
Group I
Explanation:
Atomic size decreases across a period. Hence, the first element of each period have largest atomic radius in that period. There, Group I elements have largest atomic radius

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