which of the following elements has a larger atomic radius than s? choose 1 answer: a o b cl c as

Explanation:

Step1: Recall atomic - radius trends

Atomic radius increases down a group and decreases across a period.

Step2: Locate elements in the periodic table

S (sulfur) is in Group 16 and Period 3. O (oxygen) is in Group 16 and Period 2. Cl (chlorine) is in Group 17 and Period 3. As (arsenic) is in Group 15 and Period 4.

Step3: Compare atomic radii

Since As is in a lower - numbered period (Period 4) compared to S (Period 3), As has a larger atomic radius. O is in a higher period than S in the same group, so its radius is smaller. Cl is in the same period as S but to the right, so its radius is smaller.

Answer:

C. As