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An alloy of mercury with one or more other metals is called a(n):
Aalkali
Bmetalloid
Cpassivation layer
Damalgam
Answer & Solution
Correct answer: D. amalgam
1. Mercury has the unusual property of dissolving many other metals to form special alloys.
2. The text defines this directly: "An amalgam is an alloy of mercury with one or more other metals."
3. "Alkali" refers to group 1 metals, "metalloid" refers to elements between metals and nonmetals, and "passivation layer" is an oxide coating -- none of these describes a mercury alloy.
4. So the correct term for a mercury-based alloy is an amalgam.
_Source: OpenStax Chemistry Ch 18 "Representative Metals, Metalloids, and Nonmetals", p.972 §18.1 Periodicity_
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