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Which statement best describes the properties of metalloids on the periodic table?
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2. Atoms & Elements
Periodic Table: Classifications
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Which of the following groups on the periodic table does NOT contain a metal?
A
Group 17 (Halogens)
B
Group 18 (Noble gases)
C
Group 2 (Alkaline earth metals)
D
Group 1 (Alkali metals)
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Understand the classification of elements in the periodic table into metals, nonmetals, and metalloids based on their properties.
Recall that Group 1 (Alkali metals) and Group 2 (Alkaline earth metals) are composed entirely of metals.
Recognize that Group 17 (Halogens) consists mainly of nonmetals but includes some metalloids; however, it is not a group of metals.
Identify that Group 18 (Noble gases) are all nonmetals and are characterized by their inertness and lack of metallic properties.
Conclude that since Group 18 contains no metals, it is the group that does NOT contain a metal.
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