Polyatomic ions

acetate - CH3COO -

ammonium - NH4 +

borate - BO3 3-

cyanide - CN -

hydroxide - OH -

iodate - IO3 -

permanganate - MnO4 -

peroxide - O2 2-

==chromate - CrO4 2-==

==dichromate - Cr2O7 2-==

@@Carbonate - CO3 2-@@

@@hydrogen carbonate (bicarbonate) - HCO3 -@@

Nitrite - NO2 -

nitrate - NO3 -

%%phosphate - PO4 3-%%

%%hydrogen phosphate (biphosphate) - HPO4 2-%%

%%dihydrogen phosphate - H2PO4 -%%

^^hypochlorite - ClO -^^

^^chlorite - ClO2 -^^

^^chlorate - ClO3 -^^

^^perchlorate - ClO4 -^^

==sulfite - SO3 2-==

==hydrogen sulfite - HSO3 -==

==sulfate - SO4 2-==

==hydrogen sulfate - HSO4 -==