Which of these atoms has the largest atomic radius?

Ar
Cl
Mg
Na

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Across Period 3, atomic radius decreases from left to right. Sodium has the largest radius among the options.

12 / 49 (24%)

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❓ The electronic structure of an atom of an element in Group 6 of the Periodic Table could be
❓ The value of Avogadro’s number is equal to

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