* Copper's typical oxidation states: Copper typically exists in two oxidation states: +1 (cuprous) and +2 (cupric).

* Chlorine's oxidation state: Chlorine has an oxidation state of -1.

* Balancing charges: To balance the charges in a compound, the sum of the oxidation states of all the atoms must equal zero.

If we try to form a compound with CuCl₃, the charges would be:

* Copper (+3)

* Chlorine (-1 x 3 = -3)

The charges don't balance (+3 - 3 = 0).

The correct formula for a copper chloride compound is CuCl₂ (copper(II) chloride). Here, the copper has an oxidation state of +2 and the two chlorine atoms have a total oxidation state of -2, resulting in a balanced compound.