Question
The four examples often used for categories of elements are metals, nonmetals, metalloids, and rare-earth elements.
Arsenic is element number 33 on the periodic table. It is a brittle, silver-gray solid at room temperature and is reactive with oxygen. There are no unique properties observed such as magnetism or luminescence. Based on these physical properties, what class of element is arsenic?
A.
metal
B.
rare-earths
C.
metalloid
D.
nonmetal
Arsenic is element number 33 on the periodic table. It is a brittle, silver-gray solid at room temperature and is reactive with oxygen. There are no unique properties observed such as magnetism or luminescence. Based on these physical properties, what class of element is arsenic?
A.
metal
B.
rare-earths
C.
metalloid
D.
nonmetal
Answers
Answered by
GPT-4o mini
Arsenic is classified as a **metalloid** (Option C). Metalloids exhibit properties that are intermediate between metals and nonmetals, and arsenic's brittle nature and reactivity with oxygen align with the characteristics of metalloids.
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