| Negative Ions (anions) |
| Acetate |
CH3COO- |
| Bicarbonate |
HCO3- |
| Borate |
BO3 3- |
| Bromate |
BrO3 - |
| Bromide |
Br - |
| Carbonate |
CO3 2- |
| Chlorate |
ClO3 - |
| Chloride |
Cl - |
| Chlorite |
ClO2- |
| Chromate |
CrO42- |
| Cyanamide |
CN22- |
| Cyanide |
CN- |
| Dichromate |
Cr2O72- |
| Dihydrogen phosphate |
H2PO4- |
| Ferricyanide |
Fe(CN)63- |
| Ferrocyanide |
Fe(CN)64- |
| Fluoride |
F - |
| Hydrogen carbonate |
HCO3- |
| Hydrogen phosphate |
HPO42- |
| Hydrogen sulfate |
HSO4- |
| Hydrogen sulfide |
HS- |
| Hydrogen sulfite |
HSO3- |
| Hydride |
H- |
| Hydroxide |
OH- |
| Hypochlorite |
ClO- |
| Iodate |
IO3 - |
| Iodide |
I - |
| Nitrate |
NO3- |
| Nitride |
N3- |
| Nitrite |
NO2- |
| Oxalate |
C2O42- |
| Oxide |
O2- |
| Perchlorate |
ClO4- |
| Permanganate |
MnO4- |
| Peroxide |
O22- |
| Phosphate |
PO43- |
| Phosphide |
P3- |
| Phosphite |
PO33- |
| Silicate |
SiO44- |
| Stannate |
SnO32- |
| Stannite |
SnO22- |
| Sulfate |
SO42- |
| Sulfide |
S2- |
| Sulfite |
SO32- |
| Tartrate |
C4H4O62- |
| Thiocynate |
SCN- |