AP Chem Polyatomic Ions

This is meant to help you memorize the Polyatomic Ions, make sure to put answer with definitions for the best results!

Acetate

C2H3O2-

Carbonate

CO3^2-

Chlorate

CIO3-

Chromate

CrO4^2-

Cyanide

CN-

Dichromate

Cr2O7^2-

Hydroxide

OH-

Iodate

IO3-

Nitrate

NO3-

Peroxide 

O2^2-

Permanganate

MnO4-

Phosphate

PO4^3-

Sulfate

SO4^2-

Ammonium 

NH4+

Hydronium

H3O+