Polyatomic Ions

Acetate

C₂H₃O₂⁻

Ammonium

NH₄⁺

Arsenate

AsO₄^3-

Carbonate

CO₃^2-

Chlorate

ClO₃^-

Chlorite

ClO₂^-

Chromate

CrO₄^2-

Cyanide

CN^-

Dichromate

Cr₂O₇^2-

Dihydrogen phosphate

H₂PO₄^-

Hydrogen carbonate

HCO₃^-

Hydrogen phosphate

HPO₄^2-

Hydrogen sulfite

HSO₃^-

Hydroxide

OH^-

Nitrate

NO₃^-

Nitrite

NO₂^-

Oxalate

C₂O₄^2-

Perchlorate

ClO₄^-

Permanganate

MnO₄^-

Peroxide

O₂^2-

Phosphate

PO₄^3-

Phosphite

PO₃^3-

Sulfate

SO₄^2-

Sulfite

SO₃^2-

Thiocyanate

SCN^-

Stoichiometry

the calculation of reactants and products in chemical reactions based on the conservation of mass

• Relationship between moles and particles/grams of substances make conversions in chemical reactions easier