Polyatomic Ions
- Hydroxide - OH (negative 1 Charge)
- Nitrate - NO3 (-1 Charge)
- Nitrite - NO2 (-1 charge)
- Carbonate - CO3 (-2 charge)
- Hydrogen Carbonate - HCO3 (-1 charge)
- Sulfate - SO4 (-2 charge)
- Sulfite - SO3 (-2 charge)
- Phosphate - PO4 (-3 charge)
- Phosphite - PO3 (-3 charge)
- Chromate - CrO4 (-2 charge)
- Chlorate - ClO3 (-1 charge)
- Acetate - C2H3O2 (-1 charge)
- Permanganate - MnO4 (-1 charge)
- Cyanide - CN (-1 charge)
- Dichromate - Cr2O7 (-2 charge)
- Perchlorate - ClO4 (-1 charge)
- Thiosulfate - S2O3 (-2 charge)
- Ammonium - NH4 (+1 charge)