Question

which element will have the largest atomic radius? aluminum (al) phosphorus (p) silicon (si) sulfur (s)

Explanation:

Step1: Recall atomic radius trend

Atomic radius decreases across a period (from left to right) in the periodic table. This is because the number of protons (nuclear charge) increases, pulling the electrons closer to the nucleus.

Step2: Analyze given elements

Al (aluminum), Si (silicon), P (phosphorus), and S (sulfur) are in the same period (period 3). Their order from left - to - right is Al, Si, P, S.

Answer:

A. aluminum (Al)