Question

Which atom is having the smallest size?​

Answer 1

Answer:

Atom of the HELIUM have the smallest atomic size.

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Answer 2

Answer:

helium

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.

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