Question

Copper, gold, and aluminium are

• A. Metals
• B. Metalloids
• C. Non-metals

Answer 1

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, Copper$\left(\mathrm{Cu}\right)$, Silver$\left(\mathrm{Ag}\right)$, Mercury$\left(\mathrm{Hg}\right)$, Aluminum$\left(\mathrm{Al}\right)$, Gold$\left(\mathrm{Au}\right)$, Platinum$\left(\mathrm{Pt}\right)$, Zinc$\left(\mathrm{Zn}\right)$.
• 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, Arsenic$\left(\mathrm{As}\right)$, Antimony$\left(\mathrm{Sb}\right)$, or Tin$\left(\mathrm{Sn}\right)$.
• 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, Boron$\left(\mathrm{B}\right)$, Carbon$\left(\mathrm{C}\right)$, or Nitrogen$\left(\mathrm{N}\right)$.
• 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.