The chemical formula of Iron III oxide is Fe2O3. It really is received from a mineral ore named hematite. It is mined after which processed to acquire iron oxide for extracting the metal. Iron is also known as Ferrum in Latin. The valency of the metal is two and three. https://spencernomli.blogdun.com/39528130/sic-ceramic-things-to-know-before-you-buy