* Copper (Cu): This is the metallic element that gives copper nitrate its characteristic blue-green color.

* Nitrogen (N): This is a non-metallic element that is part of the nitrate ion.

* Oxygen (O): This is another non-metallic element that is also part of the nitrate ion.

The chemical formula for copper nitrate is Cu(NO₃)₂. This formula tells us that each molecule of copper nitrate contains one copper atom, two nitrogen atoms, and six oxygen atoms.