Question

The oxidation state of $Cu$ and $Fe$ in copper pyrites is respectively:

• A. $1^{+}$ and $2^{+}$
• B. $2^{+}$ & $3^{+}$
• C. $1^{+}$ and $3^{+}$
• D. $2^{+}$ & $6^{+}$

Answer 1

The correct option is C $1^{+}$ and $3^{+}$

Formula of Copper pyrite is $CuFe{S}_2$. It is a principal ore of copper.

In this $Cu$ is in $+1$ oxidation state

$Fe$ is in $+3$ oxidation state.

Its structure is tetragonal.