Assuming that you are asking about ferric oxide, its formula is Fe2O3
Lithium oxide has the chemical formula Li2O.Soium oxide has the chemical formula Na2O.Lithium sodium oxide has the chemical formula LiNaO.
The chemical formula for Rubidium Oxide is the formula: Rb2O.
The chemical formula for silver(I) oxide is Ag2O.The chemical formula for silver(II) oxide is AgO.
Dipotassium oxide's chemical formula is K2O.
The chemical formula for boron oxide is B2O3
Al2O3 is the chemical formula of aluminium oxide.
We know that Cs2O is the chemical formula for caesium oxide.
The chemical formula for iron (lll) oxide is Fe2O3.
The chemical formula for iron (lll) oxide is Fe2O3.
The formula for lithium oxide is Li2O.
BeO is the formula for Beryllium oxide
The chemical formula for boron oxide is B2O3