Question

6 which of the following elements is a nonmetal? a arsenic (as) b calcium (ca) c chlorine (cl) d aluminum (al)

Explanation:

To determine which element is a nonmetal, we analyze each option:

• Option A: Arsenic (As) is a metalloid, not a nonmetal. Metalloids have properties intermediate between metals and nonmetals.
• Option B: Calcium (Ca) is an alkaline earth metal, so it is a metal.
• Option C: Chlorine (Cl) is a halogen and is classified as a nonmetal. Nonmetals typically lack metallic luster, are poor conductors of heat and electricity, and are found on the right side of the periodic table (except for hydrogen).
• Option D: Aluminum (Al) is a metal, specifically a post - transition metal.

Answer:

C. Chlorine (Cl)