Haematite is an oxide of which metallic element?
Mixed oxide Mixed oxide In chemistry, a mixed oxide is a somewhat informal name for an oxide that contains cations of more than one chemical element or cations of a single element in several states of oxidation. The term is usually applied to solid ionic compounds that contain the oxide anion O and two or more element cations. Typical examples are ilmenite (FeTiO), a mixed oxide of iron (Fe) and titanium (Ti) cations, the mineral perovskite and oxides sharing the perovskite structure and garnet. The cations may be the same element in different ionization states: a notable example is magnetite FeO, which
Oxide chemical elements in their highest oxidation state are predictable and are derived from the number of valence electrons for that element. Even the chemical formula of O, tetraoxygen, is predictable as a group 16 element. One exception is copper, for which the highest oxidation state oxide is copper(II) oxide and not copper(I) oxide. Another exception is fluoride, which does not exist as one might expect—as FO—but as OF. Since fluorine is more electronegative than oxygen, oxygen difluoride (OF) does not represent an oxide of fluorine, but instead represents a fluoride of oxygen. The following table gives examples of commonly encountered