What is iron III, and how does it combine with polyatomic ions? For example, what would be the chemical formula for the combination of iron III and C2H3O2- (acetate)?
B - iron is not a group A metal, but rather a transition metal. Oxygen is a nonmetal anion.
Iron (III) is Fe+3 Fe+3 combines with -3 ions 1:1,. Fe PO4 Fe+3 combines with -2 ions , 2:3 Fe2O3 Fe+3 combinnes with -1 ion , 1:3 . Fe (C2H3O2)3
