An
anion is an ion which has a negative charge. This is a table listing common
anions and their formulas.
Table of Common Anions
| Simple Anions |
Formula |
| Hydride |
H- |
| Oxide |
O2- |
| Fluoride |
F- |
| Sulfide |
S2- |
| Chloride |
Cl- |
| Nitride |
N3- |
| Bromide |
Br- |
| Iodide |
I- |
| | |
| Oxoanions |
Formula |
| Arsenate |
AsO43- |
| Phosphate |
PO43- |
| Arsenite |
AsO33- |
| Hydrogen Phosphate |
HPO42- |
| Dihydrogen Phosphate |
H2PO4- |
| Sulfate |
SO42- |
| Nitrate |
NO3- |
| Hydrogen Sulfate |
HSO4- |
| Nitrite |
NO2- |
| Thiosulfate |
S2O32- |
| Sulfite |
SO32- |
| Perchlorate |
ClO4- |
| Iodate |
IO3- |
| Chlorate |
ClO3- |
| Bromate |
BrO3- |
| Chlorite |
ClO2- |
| Hypochlorite |
OCl- |
| Hypobromite |
OBr- |
| Carbonate |
CO32- |
| Chromate |
CrO42- |
| Hydrogen Carbonate or Bicarbonate |
HCO3- |
| Dichromate |
Cr2O72- |
| | |
| Anions from Organic Acids |
Formula |
| Acetate |
CH3COO- |
| Formate |
HCOO- |
| | |
| Other Anions |
Formula |
| Cyanide |
CN- |
| Amide |
NH2- |
| Cyanate |
OCN- |
| Peroxide |
O22- |
| Thiocyanate |
SCN- |
| Oxalate |
C2O42- |
| Hydroxide |
OH- |
| Permanganate |
MnO4- |
