Give the formula of each of the following copper minerals:

A. cuprite, copper (I) oxide

B. chalcocite, copper (I) sulfide

C. covellite, copper (II) sulfide

Cu2O; Cu2S; CuS

A. The formula for cuprite, copper (I) oxide, is Cu2O.

B. The formula for chalcocite, copper (I) sulfide, is Cu2S.

C. The formula for covellite, copper (II) sulfide, is CuS.

To find the chemical formula of each copper mineral, we need to understand the oxidation states of copper and the characteristics of each mineral. The oxidation state of copper is denoted by a Roman numeral in parentheses after the name of the mineral.

A. Cuprite, copper(I) oxide:
Cuprite is a mineral composed of copper and oxygen. The Roman numeral (I) in the name indicates that copper is in the +1 oxidation state. The chemical formula for cuprite is Cu2O. This means that there are two copper ions (Cu+) and one oxygen ion (O2-) in the compound.

B. Chalcocite, copper(I) sulfide:
Chalcocite is a native copper sulfide mineral. Here, the Roman numeral (I) indicates that copper is in the +1 oxidation state. The chemical formula for chalcocite is Cu2S. This means that there are two copper ions (Cu+) and one sulfur ion (S2-) in the compound.

C. Covellite, copper(II) sulfide:
Covellite is a copper sulfide mineral like chalcocite, but with a different oxidation state for copper. The Roman numeral (II) indicates that copper is in the +2 oxidation state. The chemical formula for covellite is CuS. This means there is one copper ion (Cu2+) and one sulfur ion (S2-) in the compound.