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

* Oxygen (O): This is a non-metallic element that is found in many compounds, including water.

* Hydrogen (H): This is another non-metallic element that is also found in water.

The chemical formula for copper II hydroxide is Cu(OH)₂. This formula indicates that one copper atom is bonded to two hydroxide ions (OH⁻).