Common Anions & Cations

NH4+
ammonium
CH3COO

acetate

(version 1)

C2H3O2

acetate

(version 2)

ClO
hypochlorite
ClO2
chlorite
ClO3
chlorate
ClO4
perchlorate
CN
cyanide
H2PO4
dihydrogen phosphate
HCO3

hydrogen carbonate

(bicarbonate)

HSO4

hydrogen sulfate

(bisulfate)

HSO3

hydrogen sulfite

(bisulfite)

OH
hydroxide
NO3
nitrate
NO2
nitrite
MNO4
permanganate
CO32-
carbonate
CrO42-
chromate
Cr2O72-
dichromate
HPO42-
hydrogen phosphate
C2O42-
oxalate
O22-
peroxide
SiO32-
silicate
SO32-
sulfite
SO42-
sulfate
AsO43-
arsenate
PO33-
phosphite
PO43-
phosphate