Copper II sulfate is an inorganic solid that is classified as an ionic compound. It has the chemical formula CuSO4, where copper Cu has a +2 charge and the sulfate ion SO4 has a -2 charge. The properties that can be used to identify its classification as an ionic compound are:1. Formation: Copper II sulfate is formed by the electrostatic attraction between the positively charged copper II cation Cu2+ and the negatively charged sulfate anion SO4- .2. High melting and boiling points: Ionic compounds generally have high melting and boiling points due to the strong electrostatic forces between the ions. Copper II sulfate has a melting point of 110C 230F and decomposes at higher temperatures.3. Solubility in water: Ionic compounds are usually soluble in polar solvents like water. Copper II sulfate is highly soluble in water, forming a blue solution.4. Conductivity: Ionic compounds conduct electricity when dissolved in water or in the molten state. This is because the ions are free to move and carry the electric charge. Aqueous solutions of copper II sulfate can conduct electricity.5. Crystal structure: Ionic compounds form crystal lattices due to the regular arrangement of cations and anions. Copper II sulfate forms a triclinic crystal structure.These properties distinguish copper II sulfate as an ionic compound rather than a covalent or metallic compound.