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Multiple Choice
Which of the following elements is classified as a metalloid?
A
Si
B
Cl
C
Na
D
Fe
Verified step by step guidance
1
Understand the classification of elements: Metals, nonmetals, and metalloids. Metalloids have properties intermediate between metals and nonmetals.
Recall that metalloids are typically found along the 'stair-step' line on the periodic table, which separates metals and nonmetals.
Identify the elements given: Si (Silicon), Cl (Chlorine), Na (Sodium), and Fe (Iron).
Locate each element on the periodic table: Si is located near the stair-step line, Cl is a nonmetal, Na is an alkali metal, and Fe is a transition metal.
Conclude that Si (Silicon) is the metalloid because it exhibits properties of both metals and nonmetals and is positioned on the stair-step line.