The chemical formula of Magnesium IV oxide is: MgO.
****************2nd Opinion ******************
Magnesium doesn't form +4 ions, so I'm thinking the original question was probably about manganese(IV) oxide, which would be MnO2.
The formula is Be(COO)2.
The chemical formula of ammonium oxalate monohydrate is (NH4)2C2O4·H2O.
If you think to mercury nitride the chemical formula is Hg3N2.
The chemical formula of strontium oxalate monohydrate is SrC2O4·H2O. The chemical equation for its formation involves the reaction of strontium nitrate with oxalic acid in the presence of water.
Oxalate is a salt or ester of oxalic acid. In chemistry, oxalate typically refers to the oxalate ion, which has a chemical formula of C2O4^2-. Oxalate ions can form complexes with metal ions and are commonly found in foods like spinach and rhubarb.
For example sodium oxalate has the chemical formula Na2C2O4.
The chemical formula of zinc oxalate is C2O4Zn.
The chemical formula for Calcium Oxalate is CaC2O4
Formula of ammonium oxalate monohydrate: (NH4)2C2O4.H2O
The formula of iron(III) oxalate is C6Fe2O12.
Ammonium oxalate monohydrate is (NH4)2C2O4•H2O
The chemical formula for molybdenum oxalate is Mo(C2O4)2.
Formula: FeC2O4
Cu2O. Cuprous is Cu+, cupric is Cu2+. Those are old-school names. Copper(I) oxide is a better name.
The chemical formula for ferric ammonium oxalate is (NH4)3Fe(C2O4)3.
The chemical formula of sodium oxalate is Na2C2O4.
Formula: (NH4)2C2O4