10
lesson pretestMultiple Choice

Pretest

Question 10 • Chemistry

Which element has a larger atomic radius than sulfur?

Answer
A
oxygen
B
cadmium
C
chlorine
D
fluorine

Explanation

Atomic radius generally increases down a group and decreases from left to right across a period. Cadmium is much lower on the periodic table than sulfur, so its atoms have a larger radius. Fluorine, chlorine, and oxygen are all above sulfur and have smaller atomic radii. The correct choice is cadmium.

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