Fe2O3
The name of the compound iron II and oxygen (FeO) is iron(II) oxide - the correct name after the inorganic chemistry nomenclature of IUPAC - or ferrous oxide.
Fe2O3
Iron (II) sulfate is the correct name for this compound. The Fe ion has a charge of 2 and so does the sulfate ion, so there is no subscript after them.
The chemical name for FeSe is iron(II) selenide.
iron(II) sulphate
Iron(III)nitride
It is Ferrous chromate or Iron (II) chromate .
The chemical name for FeCrO₄ is iron(II) chromate.
The chemical name for Fe(OH)2 is iron(II) hydroxide.
Fe3O2. But it's not right! Oxygen forms a 2- ion and iron can be 2+ or 3+. So the formulae of iron oxide can be FeO or Fe2O3.
FeSO4 stands for iron (II) sulfate, which is a chemical compound composed of iron, sulfur, and oxygen. It is commonly used in various industrial applications and as a dietary supplement for iron deficiency.
The chemical formula of the anion ferrocyanide is Fe(CN)64-.