ammonium
NH4+
hydronium
H3O+
hydroxide
OH-
acetate
CH3CO2^-
cyanide
CN-
peroxide
O2^2-
carbonate
CO3^2-
nitrate
NO3-
phosphate
PO4^3-
sulfate
SO4^2-
chlorate
ClO3-
bromate
BrO3^-
iodate
IO3-
chromate
CrO4^2-
permanganate
MnO4^-
mercury(I)
Hg2^2+
azide
N3^-
chlorite
ClO2^-
dichromate
Cr2O7^2-
dihydrogen phosphate
H2PO4^-
hydrogen carbonate or bicarbonate
HCO3^-
hydrogen phosphate
HPO4^2-
hydrogen sulfate or bisulfate
HSO4^-
nitrite
NO2^-