chem - polyatomic ions

Ammonium

NH4+

Acetate

CH3COO1–

Chlorite

ClO2–

Chlorate

ClO3–

Hydroxide

OH–

Nitrite

NO2–

Nitrate

NO3–

Peroxide

O2 2–

Oxalate

C2O4 2–

Chromate

CrO4 2–

Dichromate

Cr2O7 2–

Carbonate

CO3 2–

Sulfite

SO3 2–

Sulfate

SO4 2–

Phosphate

PO4 3–