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As you move down a group in the periodic table, how does the metallic character (reactivity of metals) typically change?
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10. Periodic Properties of the Elements
Periodic Trend: Metallic Character
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Elements found to the left of the metalloids on the periodic table display which properties?
A
Intermediate properties between metals and nonmetals
B
Low metallic character, poor electrical conductivity, and brittleness
C
High metallic character, good electrical conductivity, and malleability
D
Nonmetallic character, high electronegativity, and poor heat conduction
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Identify the position of metalloids on the periodic table; metalloids are located along the stair-step line dividing metals and nonmetals.
Recall that elements to the left of the metalloids are generally metals, which tend to have high metallic character.
Understand that metals typically exhibit properties such as good electrical conductivity, malleability, and ductility.
Contrast these properties with those of nonmetals and metalloids, which have intermediate or nonmetallic characteristics.
Conclude that elements to the left of the metalloids display high metallic character, good electrical conductivity, and malleability.
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