The chemical name for C2O4 with a charge of -2 is Oxalate.
The chemical formula K2CO3 is for potassium carbonate.
The chemical formula of sodium oxalate is Na2C2O4.
The chemical formula for ferric ammonium oxalate is (NH4)3Fe(C2O4)3.
the atoms make up carbonate ion and its charge its 4+.
One possibility, for the lead(IV) salt, is Pb(C2O4)2.
C2O4 has a charge of -2
The chemical formula K2CO3 is for potassium carbonate.
The chemical formula of sodium oxalate is Na2C2O4.
C2O4(NH4)2
The chemical formula for ferric ammonium oxalate is (NH4)3Fe(C2O4)3.
-2 charge Be careful though, because if there are more than one oxygen in an oxide it will differ. Such as Aluminium oxide, the formula for this is Al2O3 and the oxide portion of this is -6
the atoms make up carbonate ion and its charge its 4+.
One possibility, for the lead(IV) salt, is Pb(C2O4)2.
For example sodium oxalate has the chemical formula Na2C2O4.
The chemical formula for molybdenum oxalate is Mo(C2O4)2.
Barium oxalate
The oxidation number of C in C2O4^2- is +3. This is because each O atom is assigned an oxidation number of -2, and the overall charge of the ion is -2, so the two C atoms must have a total oxidation number of +6 in order to balance the charge.