Place the elements As, S, and Ar in order of increasing atomic radius.
A) As, Ar, S
B) S, Ar, As
C) S, As, Ar
D) As, S, Ar
E) Ar, S, As

Name: Place the elements As, S, and Ar in order of increasing atomic radius. A) As, Ar, S B) S, Ar, As C) S, As, Ar D) As, S, Ar E) Ar, S, As
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Quizplus · Accepted Answer

Atomic radius increases down a group and decreases across a period. Ar is a noble gas with a smaller atomic radius than S and As, which are in the same group with As having a larger radius than S.

Place the Elements As, S, and Ar in Order of Increasing