Multiple Choice
How are elements organized in the periodic table?
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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
Si
B
Na
C
O
D
Fe
Verified step by step guidance1
Understand the classification of elements: Metals, nonmetals, and metalloids. Metalloids have properties intermediate between metals and nonmetals.
Recall that Sodium (Na) is an alkali metal, Oxygen (O) is a nonmetal, and Iron (Fe) is a transition metal.
Identify Silicon (Si) as an element located along the stair-step line on the periodic table, which is characteristic of metalloids.
Recognize that metalloids like Silicon exhibit mixed properties such as semiconducting behavior and moderate electrical conductivity.
Conclude that among the given options, Silicon (Si) is classified as a metalloid.
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