No...theres only Copper I and Copper II cations
Copper is the cation (+) and sulfur the anion (-).
The chemical formula for copper (III) arsenide is Cu3As.
Copper (III) Iodide
Copper (II) Sulfate, is an ionic compound. If that is what you are asking. Anytime you have a metal that has a number in parenthesis after it, you're going to be using ions. The number in paranthesis is what indicates the charge on the ion. For example, Copper (II) would have a charge of +2.
Example: copper(II) sulfate - CuSO4(II) is the valence of the cation, in this case Cu(II).
The blue color of copper salt solutions such as copper nitrate are due to the copper cation.
Only copper of these listed donates electrons and becomes a cation.
3+
It is a chromium III
Copper is the cation (+) and sulfur the anion (-).
The Roman numeral following the cation tells you the oxidation number of that cation. For example, Cu(ll)chloride tags you it is CuCl2 because the (ll) after Cu indicates an ox. no. of 2+.
For the cation the formula is Cu2+.
The cation is the metal "Cu", otherwise known as the element Copper.
Elemental, or metallic copper, has the formula of Cu. The most common copper cation is Copper (II), or Cu2+, however, copper can also exist in oxidation states +1, +3, and +4, which would be Cu+, Cu3+, and Cu4+, respectively.
A cation is an ion with a positive charge. Ex: Iron(III) ion, Ca2+, Mercurous ion
The chemical formula for copper (III) arsenide is Cu3As.
The compound copper (III) chloride doesn't exist !