Of the following,which atom has the largest atomic radius?
A)Na
B)Cl
C)K
D)Br

Question

Quizplus · Accepted Answer

Atomic radius generally increases as you go down a group and decreases as you go across a period from left to right. K (Potassium) is located below Na (Sodium) and has a larger atomic radius due to the additional energy levels present in the valence shell. Cl (Chlorine) and Br (Bromine) are located in the same period as Na and have smaller atomic radii due to the increase in nuclear charge.

Of the Following,which Atom Has the Largest Atomic Radius