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Question

Copper, gold, and aluminium are


A

Metals

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B

Metalloids

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C

Non-metals

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Solution

The correct option is A

Metals


Answer:

The explanations for the correct answers:

Option A: Metals

  • An element with high electrical conductivity, lustre, and malleability is called a metal.
  • For example, CopperCu, SilverAg, MercuryHg, AluminumAl, GoldAu, PlatinumPt, ZincZn.
  • So, option A is the right answer.

The explanations for the incorrect answers:

Option B: Metalloids

  • An element whose properties are intermediate between those of metals and solid non-metals or semiconductors.
  • For example, ArsenicAs, AntimonySb, or TinSn.
  • Copper, gold, and aluminium are not examples of metalloids.
  • So, option B is the wrong answer.

Option C: non-metals

  • An element that lacks the characteristics of a metal mentioned above is called non-metal.
  • For example, BoronB, CarbonC, or NitrogenN.
  • Copper, gold, and aluminium are not examples of nonmetals.
  • So, option C is the wrong answer.

Copper, gold, and aluminium are examples of metals.

Therefore, the correct answer is option A metals.


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