AP Chem Polyatomics to Know

this is a full list I found online, not just the highlighted ones from class

NH₄⁺

ammonium

H₃O⁺

hydronium

Hg₂²⁺

Mercury I

H₂PO₄^-

dihydrogen phosphate

HCO₃^-

hydrogen carbonate

HSO₃^-

hydrogen sulfate

HSO₄^-

hydrogen sulfate

NO₂^-

nitrite

NO₃^-

nitrate

OH^-

hydroxide

CH₃COO^- or C₂H₃O₂^-

acetate

CN^-

cyanide

CNO^-

cyanate

CNS^-

thiocyanate

O₂^-

superoxide

MnO₄^-

permanganate

ClO^-

hypochlorite

ClO₂^-

chlorite

ClO₃^-

chlorate

ClO₄^-

perchlorate

BrO₃^-

bromate

IO₃^-

iodate

HPO₄^2-

hydrogen phosphate

CO₃^2-

carbonate

SO₃^2-

sulfite

SO₄^2-

sulfate

S₂O₃^2-

thiosulfate

SiO₃^2-

silicate

C₂O₄^2-

oxalate

Cr₂O₇^2-

dichromate

MoO₄^2-

molybdate

O₂^2-

peroxide

PO₄^3-

phosphate

AsO₄^3-

arsenate