1. Copper(I) chloride (CuCl):

* Chemical formula: CuCl

* Composition: One copper atom (Cu) bonded to one chlorine atom (Cl)

2. Copper(II) chloride (CuCl₂):

* Chemical formula: CuCl₂

* Composition: One copper atom (Cu) bonded to two chlorine atoms (Cl)

It's important to specify which copper chloride you are referring to, as they have different properties and applications.