To name the compound written as CuCl2, you would write:

O

A. Copper chloride.

O

B. Chromium (II) chloride.

O

O

C. Copper (II) chloride.

D. Copper fluoride.

Answer: option C. Copper (II) chloride

Explanation:

To name CuCl2, we need to know the oxidation state of Cu in the compound as chlorine always have oxidation on - 1 in all its compound. The oxidation state of Cu can be calculated as follows:

Cu + 2Cl = 0 (since the compound has no charge)

Cl = - 1

Cu + 2 (-1) = 0

Cu - 2 = 0

Collect like terms

Cu = 0 + 2

Cu = + 2

Therefore, the oxidation state of Cu in CuCl2 is + 2.

The name of the compound will be copper (ii) chloride, since cupper has oxidation state + 2 in the compound.