chemical formula of iron oxide Share with your friends Share 1 Utkarsh Singh answered this Iron gives atleast two valency i. e. 2+ and 3+. So, Feo and Fe2O3 4 View Full Answer Bill Gates answered this FeO 0 Abhik Raj answered this Fe2O3 2 Zohahaider answered this Fe2O3 2 Mohit Agrawal answered this Fe2O3 0
