Which of these atoms has the largest radius?
A) B
B) Ga
C) Br
D) Si
E) Cl

Question

Quizplus · Accepted Answer

As we move down a group on the periodic table, the atomic radius tends to increase because the number of energy levels increases. Ga is located below B in the same group, so it has a larger atomic radius than B. Br, Cl, and Si are all located in different periods than B and Ga, so their atomic radii cannot be accurately compared without further information.

Which of These Atoms Has the Largest Radius