In chemistry, iron(II) refers to the element iron in its +2 oxidation state. The adjective ferrous or the prefix ferro- is often used … See more

All known forms of life require iron. Many proteins in living beings contain iron(III) centers. Examples of such metalloproteins include hemoglobin, ferredoxin, and the cytochromes. In many of these proteins, Fe(II) conv… See more

Typically iron(II) salts, like the "chloride" are aquo complexes with the formulas [Fe(H2O)6] , as found in ferrous ammonium sulfate.
The aquo ligands on iron(II) complexes are labile. It rea… See more

Iron(II) is found in many minerals and solids. Examples include the sulfide and oxide, FeS and FeO. These formulas are deceptively simple because these sulfides and oxides are often nonstoichiometric. For example, "f… See more

Iron(II) is a d center, meaning that the metal has six "valence" electrons in the 3d orbital shell. The number and type of ligands bound to iron(II) determine how these electrons arrange themselves. With so-called "stro… See more

• Ferric – The element iron in its +3 oxidation state — [ Iron(III)] compounds
• Ferromagnetism – Mechanism by which materials form into and are attracted to magnets… See more