Here's how to understand the formula:

* Cu: Copper (Cu) is a transition metal with a +2 charge in this compound.

* H₂PO₄: Dihydrogen phosphate (H₂PO₄⁻) is a polyatomic ion with a -1 charge.

To balance the charges, we need two dihydrogen phosphate ions for every copper ion, hence the formula Cu(H₂PO₄)₂.