The chemical formula for chromium (III) acetate is notated as Cr(C2H3O2)3. The formula contains the symbol Cr for chromium. The chemical formula for acetate, C2H3O2, uses the symbols C for carbon, H for hydrogen and O for oxygen.
The formula contains three acetate molecules for every molecule of chromium (III) to balance out the charges. The combined charges of the atoms in the acetate compound hold a charge of minus one. Therefore, the formula requires three molecules of acetate to balance out the plus three charge of a single molecule of chromium. The charge on the C2 is neutral, with one atom charged to plus four and the other to minus four.