iron.
It is called a ferrous compound or a Fe(II) compound.
The name of the compound Fe(NO3)3 is Iron(III) nitrate.
The name of the compound with the formula Fe(CN)2 is iron(II) cyanide.
The compound name for Fe(CN)₃ is iron(III) cyanide. In this compound, iron has a +3 oxidation state, which is indicated by the Roman numeral III in the name. The cyanide ion (CN⁻) acts as a ligand, and since there are three of them, it forms a coordination complex with the iron ion.
Fe(BrO3)2 is Iron II Bromate.
Fe(ClO4)3 is an ionic compound named Iron III Perchlorate.
Iron chloride
The compound name for Fe0 is iron, as Fe represents the element iron and the subscript 0 indicates that it is in its elemental form with zero charge.
Fe(SO4)3 is Iron(III) sulfate Wrong: Fe2(SO4)3 is iron(III) sulfate.
They are elements not compound mixture
The OH compound typically refers to hydroxide, which is a negatively charged ion composed of one oxygen and one hydrogen atom. The Fe compound usually refers to iron, a metal that can form various compounds such as iron oxide or iron sulfate.
(MnO4)2- is the chemical formula of manganate ion.