Its oxide must be X2O.
The formula of an oxide is typically written as a combination of the element symbol and the number of oxygen atoms present. For example, the formula for carbon dioxide is CO2, where "C" represents carbon and "O2" represents two oxygen atoms.
The correct formula for copper(I) cyanide is CuCN.
The chemical formula for radium oxide is RaO. Radium is a group 2 element, so it typically forms a +2 oxidation state. This compound is an ionic compound where radium is in the cation form and oxygen is in the anion form.
Zinc white is a name for zinc oxide - ZnO, used as dye.
There is more than one oxide of Iron, to answer your question you need to be more specific with which oxide you are asking about.
The general chemical formula for a metal oxide is MO, where M represents the metal element. The chemical formula for water is H2O.
The oxide formula of an element in Group IIIA of the periodic table would typically be M2O3, where M represents the element from this group. This is because elements in Group IIIA generally form 3+ cations, which combine with 2- oxide ions to form a neutral compound.
The chemical formula for iron (III) oxide is Fe2O3, where Fe represents iron and O represents oxygen.
The chemical formula for magnesium oxide is MgO, where Mg represents magnesium and O represents oxygen.
The chemical formula of cupric oxide is CuO, where Cu represents copper and O represents oxygen.
FeO
The formula of an oxide is typically written as a combination of the element symbol and the number of oxygen atoms present. For example, the formula for carbon dioxide is CO2, where "C" represents carbon and "O2" represents two oxygen atoms.
The element symbol for silicon is Si, and the chemical formula for silicon oxide is SiO2.
Iron 3 oxide is Fe2O3 Carbonic acid is combination between water and carbon dioxide = H2CO3
CH3(CH2O)n is the formula for polyethylene oxide.
O2- is the formula for oxide ion. The negative symbol indicates the presence of anions and 2 represents the oxidation state.
The correct formula for copper(I) cyanide is CuCN.