Question

in second group of elements which element has the smallest atomic size?​

Answer 1

Answer:

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Explanation:

Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, 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

Explanation:

Helium has the smallest atomic size.

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