What Is The Molecular Formula For Nickel(II) Oxide?

The molecular formula for nickel(II) oxide is NiO. This means that one molecule of nickel(II) oxide contains one atom of nickel and one atom of oxygen, which are held together by a covalent bond. The oxidation state of nickel in this compound is +2, which is indicated by the Roman numeral (II) in the name. Nickel(II) oxide is a black solid that is commonly used as a catalyst in chemical reactions and as a pigment in ceramics and glass.