Question

A metal X having a reddish brown lustre, forms two oxides Y and Z. X is
used in making alloys like brass and bronze and is a good conductor of
electricity. Identify X, Y and Z.

Answer 1

X - Copper ($Cu^{}$)

Y -  Cuprous Oxide ($Cu_{2}O$) or Copper(I) oxide

Z -  Cupric Oxide ($CuO^{}$) or Copper(II) oxide

Explanation:

Copper has a reddish-brown luster and used in making alloys like brass and bronze. It is a good conductor of electricity.

Copper oxides exist in two different forms: cupric oxide ($CuO^{}$) and cuprous oxide ($Cu_{2}O$), depending on the valence state of copper.

Information:

• (Brass is an alloy of copper and zinc)

• (Bronze is a metal alloy consisting primarily of copper, usually with tin as the main additive, but sometimes with other elements such as phosphorus, manganese, aluminum, or silicon)