Polyatomic Ions

(CO3)2-

Carbonate

(HCO3)-

Hydrogen Carbonate/Bicarbonate

(CH3COO)-

Acetate

CN-

Cyanide

SCN-

Thiocyanate

ClO-

Hypochlorite

(ClO2)-

Chlorite

(ClO3)-

Chlorate

(ClO4)-

Perchlorate

(CrO4)2-

Chromate

(Cr2O7)2-

Dichromate

(MnO4)-

Permanganate

(N3)-

Azide

(NH4)+

Ammonium

(NO2)-

Nitrite

(NO3)-

Nitrate

OH-

Hydroxide

(O2)2-

Peroxide

(PO4)3-

Phosphate

(HPO4)2-

Hydrogen Phosphate

(H2PO4)-

Dihydrogen Phosphate

(S2)2-

Disulfide

(SO3)2-

Sulfide

(SO4)2-

Sulfate

(HSO3)-

Hydrogen Sulfite/Bisulfite

(HSO4)-

Hydrogen Sulfate/Bisulfate