Copper sulfate (CuSO₄) doesn't have a single atomic number. Atomic numbers refer to individual elements, not compounds.

Here's why:

* Atomic Number: The atomic number represents the number of protons in the nucleus of an atom. It defines the element.

* Copper Sulfate: Copper sulfate is a compound formed by the combination of copper (Cu), sulfur (S), and oxygen (O) atoms.

To find the atomic numbers of the elements in copper sulfate:

* Copper (Cu): Atomic number 29

* Sulfur (S): Atomic number 16

* Oxygen (O): Atomic number 8