What are the oxidation numbers for iron oxide, Fe3O4?

1 Answer
Apr 27, 2016

This is a mixed valence compound of Fe(II) and Fe(III).

Explanation:

If we write Fe2O3FeO the formulation is easier to consider. Fe3O4 occurs naturally as the mineral magnetite. Iron oxide chemistry is a very broad church and many mixed oxides and oxidation states are available.