Polyatomic Ions

NO^-₃

nitrate

NO^-₂

nitrite

CrO₄^2-

chromate

Cr₂O₇^2-

dichromate

CN^-

cyanide

MnO₄^-

permanganate

OH^-

hydroxide

O₂^2-

peroxide

NH₂^-

amide

CO₃^2-

carbonate

SO₄^2-

sulfate

SO₃^2-

sulfite

C₂O4^2-

oxalate

PO₄^3-

phosphate

PO₃^3-

phosphite

ClO₄^-

perchlorate

ClO₃^-

chlorate

ClO₂^-

chlorite

ClO^-

hypochlorite

IO₄^-

periodate

IO₃^-

iodate

IO^-

hypoiodite

BrO₃^-

bromate

BrO^-

hypobromate

HCO3^-

hydrogen carbonate (bicarbonate)

HSO₄^-

hydrogen sulfate (bisulfate)

HSO₃^-

hydrogen sulfite (bisulfite)

HC₂O₄^-

hydrogen oxalate (binoxalate)

HPO₄^2-

hydrogen phosphate

H₂PO₄^-

dihydrogen phosphate

S₂O₃^2-

thiosulfate

AsO₄^3-

arsenate

SeO₄^2-

selenate

SiO₃^2-

silicate

C₄H₃O₂^-

tartrate

C₂H₃O₂^-

acetate (CH₃COO^-)

HS^-

hydrogen sulfide

BO₃^3-

borate

B₄O₇^2-

tetraborate

SiF₆^2-

hexafluorosilicate

SCN^-

thiocynate