Which atom in each group (I and II)has the smallest atomic radius? (I)K,Zn,Br (II)Al,Ga,In
A)K;Al
B)K;In
C)Br;Al
D)Br;In

Question

Quizplus · Accepted Answer

Within group I, the atomic radius decreases from left to right. Therefore, Br has the smallest atomic radius. Within group II, the atomic radius again decreases from left to right. Therefore, Al has the smallest atomic radius. Therefore, choice C (Br;Al) is the correct answer.

Which Atom in Each Group (I and II)has the Smallest