AP Chem Polyatomic Ions

Acetate

Acetate

C₂H₃O₂  (-1)

Nitrite

NO₂ (-1)

Nitrate

NO₃ (-1)

hypochlorite

ClO (-)

chlorite

ClO2 (-)

chlorate

ClO3 (-)

perchlorate

ClO4 (-)

hypobromite

BrO (-)

bromite

BrO2 (-)

bromate

BrO3 (-)

perbromate

BrO4 (-)

hypoiodite

IO (-)

iodite

IO2 (-)

iodate

IO3 (-)

periodate

IO4 (-)

cyanide

CN (-)

thiocyanate

SCN (-)

dihydrogen phosphate

H2PO4 (-)

hydrogen carbonate (bicarbonate)

HCO3 (-)

hydrogen sulfate (bisulfate)

HSO4 (-)

hydrogen sulfide (bisulfide)

HS (-)

hydrogen sulfite (bisulfite)

HSO3 (-)

hydroxide

OH (-)

permanganate

MnO4 (-)

carbonate

CO3 (2-)

chromate

CrO4 (2-)

dichromate

Cr2O7 (2-)

hydrogen phosphate

HPO4 (2-)

oxalate

C2O4 (2-)

peroxide

O2 (2-)

silicate

SiO3 (2-)

sulfite

SO3 (2-)

sulfate

SO4 (2-)

thiosulfate

S2O3 (2-)

phosphite

PO3 (3-)

phosphate

PO4 (3-)

carbide

C (4-)

ammonium

NH4 (+)