Polyatomic Ions (by Charge)

ammonium

NH4⁺

acetate

C₂H₃O₂⁻

arsenate

AsO₃³⁻

bromate

BrO₃⁻

carbonate

CO₃²⁻

chromate

CrO₄²⁻

chlorate

ClO₃⁻

chlorite

ClO₂⁻

cyanide

CN⁻

dichromate

Cr₂O₇²⁻

hydrogen sulfate (Bisulfate)

HSO₄⁻

hydrogen sulfite (bisulfite)

HSO₃⁻

hydroxide

OH⁻

nitrate

NO₃⁻

nitrite

NO₂⁻

oxalate

C₂O₄²⁻

perchlorate

ClO₄⁻

permanganate

MnO₄⁻

peroxide

O₂²⁻

phosphate

PO₄³⁻

sulfate

SO₄²⁻

sulfite

SO₃²⁻

thiocyanate

SCN⁻

thiosulfate

S₂O₃²⁻

Phosphite

PO3 3-

Hydronium

H3O +

Hydrogen

H +

Hydride

H -

Fluoride

F -

Chloride

Cl -

Bromide

Br -

Iodide

I -

Oxide

O 2-

Sulfide

S 2-

Selenide

Se 2-

Nitride

N 3-

Phosphide

P 3-

Arsenide

As 3-