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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Select the correct order of atomic size among the following:-
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Correct option: D
Na>Mg>LiNa > Mg > Li
The correct answer is Na>Mg>LiNa > Mg > Li because atomic size decreases across a period (Na > Mg) and increases down a group (Na > Li).

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