Polyatomic Ions

• NO2


  Nitrite
• OH


  Hydroxide
• NH4+


  Ammonium
• NO3


  Nitrate
• ClO4


  Perchlorate
• ClO2


  Chlorite
• ClO


  Hypochlorite
• CO3


  Carbonate
• HCO3


  Bicarbonate/Hydrogen Carbonate
• CN


  Cyanide
• C2H3O2


  Acetate
• SO4


  Sulfate
• HSO4


  Hydrogen Sulfate/Bisulfate
• SO3


  Sulfite
• HSO3


  Hydrogen Sulfite/Bisulfite
• PO4


  Phosphate
• HPO4


  Hydrogen Phosphate
• H2PO4


  Dihydrogen Phosphate
• PO3


  Phosphite