______ is an important metal to form amalgam.
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A.
Tungsten
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B.
Mercury
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C.
Aluminium
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D.
Iron
Correct Answer:
B. Mercury
Explanation:
Mercury is the essential metal required to form an amalgam because, by definition, an amalgam is an alloy created when mercury combines with another metal. As the only common metal that remains liquid at room temperature, mercury can easily dissolve and bind with various solid metals like silver, tin, and copper. This unique property allows it to create a pliable mixture that eventually hardens into a durable material, which is why it is the primary component in dental fillings. While many metals can form these alloys, others such as iron, tungsten, and platinum are notable exceptions that do not readily react with mercury. Therefore, mercury serves as the foundational element in the production of any amalgam.
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