Multiple Choice
Which two elements are the most abundant in Earth's crust?
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2. Atoms & Elements
Periodic Table: Classifications
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Which of the following is a property of metalloids?
A
They are typically malleable and ductile.
B
They are generally nonreactive gases at room temperature.
C
They have intermediate electrical conductivity.
D
They are excellent conductors of heat and electricity.
Verified step by step guidance1
Understand what metalloids are: Metalloids are elements that have properties intermediate between metals and nonmetals.
Review the properties of metals: Metals are typically malleable, ductile, and excellent conductors of heat and electricity.
Review the properties of nonmetals: Nonmetals can be gases or solids and are generally poor conductors of heat and electricity; some are nonreactive gases at room temperature.
Identify the key property of metalloids: Metalloids have electrical conductivity that is between that of metals and nonmetals, meaning they are semiconductors.
Conclude that the correct property of metalloids is that they have intermediate electrical conductivity, distinguishing them from metals and nonmetals.
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