Which of the following has the smallest atomic radius?
A) Cl
B) P
C) S
D) Si
E) Al

Question

Quizplus · Accepted Answer

The atomic radius generally decreases across a period from left to right due to an increase in the effective nuclear charge, which attracts the valence electrons more strongly, making the atomic radius smaller. Among the given elements, Cl belongs to period 3 and is located on the right side of the period, so it has the smallest atomic radius.

Which of the Following Has the Smallest Atomic Radius