Multiple Choice
Which of the following statements correctly compares metals and nonmetals?
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2. Atoms & Elements
Periodic Table: Classifications
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When looking at the periodic table, which of the following elements is classified as a metalloid?
A
O
B
Si
C
Na
D
Fe
Verified step by step guidance1
Understand the classification of elements on the periodic table: metals, nonmetals, and metalloids. Metalloids have properties intermediate between metals and nonmetals.
Recall that oxygen (O) is a nonmetal, sodium (Na) is a metal, and iron (Fe) is a metal.
Identify silicon (Si) as an element located along the 'stair-step' line on the periodic table, which separates metals and nonmetals.
Recognize that elements along this stair-step line, including silicon, are classified as metalloids due to their mixed properties.
Therefore, among the given options, silicon (Si) is the metalloid.
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