Multiple Choice
Which of the following elements is NOT classified as a metalloid?
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2. Atoms & Elements
Periodic Table: Classifications
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Which of the following elements is classified as a metalloid?
A
Fe
B
O
C
Si
D
Na
Verified step by step guidance1
Understand the classification of elements into metals, nonmetals, and metalloids based on their physical and chemical properties.
Recall that metalloids have properties intermediate between metals and nonmetals and are typically found along the 'stair-step' line on the periodic table.
Identify the elements given: Fe (iron) is a metal, O (oxygen) is a nonmetal, Na (sodium) is a metal, and Si (silicon) is known to have metalloid properties.
Recognize that silicon (Si) exhibits characteristics of both metals and nonmetals, such as semiconducting behavior, which classifies it as a metalloid.
Conclude that among the options, Si is the element classified as a metalloid.
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