AP Chemistry Polyatomic Ions

Required Polyatomic Ions to know for AP Chemistry Exam

BO₃^3-

BO₃^3-

borate

B₄O₇^2-

tetraborate

C₂H₃O₂^-

acetate

C₂O₄^2-

oxalate

ClO^-

hypochlorite

ClO₂^-

chlorite

ClO₃^-

chlorate

ClO₄^-

perchlorate

CN^-

cyanide

CO₃^2-

carbonate

CrO₄^2-

chromate

Cr₂O₇^2-

dichromate

HCO₃^-

Hydrogen Carbonate/bicarbonate

C₂O₄^-2

hydrogen oxalate

HPO₄^2-

hydrogen phosphate/biphosphate

H₂PO₄^-

dihydrogen phosphate

HSO₃^-

hydrogen sulfite/bisulfite

HSO₄^-

hydrogen sulfate/bisulfate

H₃O⁺

hydronium

Hg₂²⁺

mercury (I)

MnO₄^-

permaganate

N₃^-

azide

NH₄⁺

ammonium

NO₂^-

nitrite

NO₃^-

nitrate

OH^-

hydroxide

PO₃^3-

phosphite

PO₄^3-

phosphate

P₂O₇^4-

diphosphate

SO₃^2-

sulfite

SO₄^2-

sulfate