Which of the following element has the largest atomic radius?

Which of the following elements have the largest atomic radius?

(a) Li

(b) Cl

(c) Na

(d) None of above

Solution: Option (c) is correct.

Na has the largest atomic radius.

Reason:

Li : belongs to the 2nd period.

Na and Cl : belong to the 3rd period.

In periodic table, 3rd period will have larger atomic radius than the second period. Again, Cl lies to the right and Na lies to the left of the periodic table. Therefore, Na has the largest atomic radius.

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