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24 February, 21:42

Which of the following elements has the smallest atomic size?

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  1. 24 February, 22:03
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    Answer:helium

    Explanation:

    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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