ammonium
NH4+
hydroxide
OH−
cyanide
CN−
acetate
CH3COO−
carbonate
CO3^2−
bicarbonate (hydrogen carbonate)
HCO3−
nitrate
NO3−
nitrite
NO2−
perchlorate
ClO4−
chlorate
ClO3−
chlorite
ClO2−
hypochlorite
ClO−
sulfate
SO4^2−
hydrogen sulfate
HSO4−
sulfite
SO3^2−
phosphate
PO4^3−
hydrogen phosphate
HPO4^2−
dihydrogen phosphate
H2PO4−