Question

The oxidation state of copper in $CuS{O}_4$ is -2.

• A. True
• B. False

Answer 1

The correct option is B

False

The oxidation state of copper in $CuS{O}_4$ is +2.

The oxidation state is the number of electrons lost or gained by the atom i.e., the net charge on that atom.

In this case, Cu lost 2 electrons so the oxidation state is +2.

Charge on ions: $C{u}^{2+}$ and ${S{O}_4}^{2-}$