Polyatomic Ions

ammonium

ammonium

NH4+

acetate

C2H3O2-

hydroxide

OH-

hypobromite

BrO-

hypochlorite

ClO-

hypoiodite

IO-

bromite

BrO2-

chlorite

ClO2-

iodite

IO2-

bromate

BrO3-

chlorate

ClO3-

iodate

IO3-

perbromate

BrO4-

perchlorate

ClO4-

periodate

IO4-

cyanide

CN-

hydrogen carbonate (bicarbonate)

HCO3-

hydrogen sulfate (bisulfate)

HSO4-

hydrogen sulfite (bisulfite)

HSO3-

hydrogen sulfide (bisulfide)

HS-

dihydrogen phosphate

H2PO4-

permanganate

MnO4-

nitrate

NO3-

nitrite

NO2-

hydroxide

OH-

thiocyanate

SCN-

peroxide

O2^2-

superoxide

O2-

carbonate

CO3^2-

oxalate

C2O4^2-

chromate

CrO4^2-

dichromate

Cr2O7^2-

sulfate

SO4^2-

sulfite

SO3^2-

hydrogen phosphate

HPO4^2-

thiosulfate

S2O3^2-

phosphate

PO4^3-