polyatomic ions!

here's their names!

Ammonia (NH4 +)
Nitrite (NO3 -)
Nitrate (NO4 -)
Acetate (C2H3O2 -)
Hypochlorite (ClO -)
Chlorite (ClO2 -)
Chlorate (ClO3 -)
Perchlorate (ClO4 -)
Hydroxide (OH -)
Peroxide (O2 2-)
Carbonate (CO3 2-)
Hydrogen Carbonate (HCO3 -)
Chromate (CrO4 2-)
Dichromate (Cr2O7 -)
Phosphate (PO4 3-)
Hydrogen Phosphate (HPO4 2-)
Dihydrogen Phosphate (H2PO4 -)
Cyanide (CN -)
Sulfite (SO3 2-)
Hydrogen Sulfite (HSO3 -)
Sulfate (SO4 2-)
Hydrogen Sulfate (HSO4 -)
Permanganate (MnO4 -)
Acetate (C2H3O2 -)