Question #c799c

Mar 22, 2017

Copper(II) chloride.

Explanation:

Copper's symbol is $\text{Cu}$ and chlorine's symbol is $\text{Cl}$. Copper is a transition metal, so its charge can vary. Because of this variance, the copper cation needs to have the $\left(I I\right)$ after it.

The $I I$ is roman numerals for positive two, or $+ 2$. And lastly, because the chloride anion is $- 1$, and the copper cation $+ 2$, there must be two chlorines, making ${\text{CuCl}}_{2}$.