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ammonium
NH4+
nitrite
NO2−
nitrate
NO3−
sulfite
SO3^2−
sulfate
SO4^2−
hydrogen sulfate
HSO4−
hydroxide
OH−
cyanide
CN−
phosphate
PO4³−
hydrogen phosphate
HPO4²−
dihydrogen phosphate
H2PO4−
carbonate
CO3²−
hydrogen carbonate
HCO3−
hypochlorite
ClO−
chlorite
ClO2−
chlorate
ClO3−
chlorate
ClO3−
perchlorate
ClO4−
acetate
C2H3O2−
permangenate
MnO4−
dichromate
Cr2O7²−
chromate
CrO4²−
peroxide
O2²−