Chem Polyatomic Ions

1+

  • Hydrogen - H+

  • Lithium - Li+

  • Sodium - Na+

  • Potassium - K+

  • Cesium - Cs+

  • Silver - Ag+

1-

  • Fluoride - F−

  • Chloride - Cl−

  • Bromide - Br−

  • Iodide - I−

  • Hydride - H−

2+

  • Magnesium - Mg2+

  • Calcium - Ca2+

  • Strontium - Sr2+

  • Barium - Ba2+

  • Cadmium - Cd2+

  • Zinc - Zn2+

2-

  • Oxide - O2−

  • Peroxide - O2 2−​

  • Sulfide - S2−

3+

  • Aluminum - Al3+

3-

  • Nitride - N3−

  • Phosphide - P3−

1+ (Polyatomic Ions)

  • Ammonium - NH4 +

1- (Polyatomic Ions)

  • Acetate - CH3COO -

  • Bicarbonate - HCO3 -

  • Bismuthate - BiO3 -

  • Bisulfite - HSO3 -

  • Bisulfate - HSO4 -

  • Cyanide - CN -

  • Cyanate - CNO -

  • Hydroxide - OH -

  • Nitrite - NO2 -

  • Nitrate - NO3 -

  • Permanganate - MnO4 -

  • Thiocyanate - CNS-

  • Dihydrogen Phosphate - H2PO4 -

2- (Polyatomic Ions)

  • Carbonate - CO3 2-

  • Chromate - CrO4 2-

  • Dichromate - Cr2O7 2-

  • Manganate - MnO4 2-

  • Molybdate - MoO4 2-

  • Oxalate - C2O4 2-

  • Sulfite - SO3 2-

  • Sulfate - SO4 2-

  • Thiosulfate - S2O3 2-

  • Tartrate - C4H4O6 2-

  • Hydrogen Phosphate - HPO4 2-

3- and 4- (Polyatomic Ions)

  • Aluminate - AIO3 3-

  • Antimonate SbO4 - 3-

  • Arsenite - AsO3 3-

  • Arsenate - AsO4 3-

  • Borate - BO3 3-

  • Phosphite - PO3 3-

  • Phosphate - PO4 3-

  • Pyrophosphate - P2O7 4-

1- (Oxyanions)

  • Perchlorate - CIO4-

  • Chlorate - ClO3 -

  • Chlorite - ClO2 -

  • Hypochlorite - ClO -

  • Periodate - IO4 -

  • Iodate - IO3 -

  • Iodite - IO2 -

  • Hypoiodite - IO -

  • Perbromate - BrO4 -

  • Bromate - BrO3 -

  • Bromite - BrO2 -

  • Hypobromite - BrO -

Ions with Variable Charges

  • Aurous or Gold (I) - Au+

  • Auric or Gold (III) - Au 3+

  • Cuprous or Copper (I) - Cu+

  • Cupric or Copper (II) - Cu 2+

  • Mercurous or Mercury (I) - Hg2 2+​

  • Mercuric or Mercury (II) - Hg 2+

  • Cobaltous or Cobalt (II) - Co 2+

  • Cobaltic or Cobalt (III) - Co 3+

  • Ferrous or Iron (II) - Fe 2+

  • Ferric or Iron (III) - Fe 3+

  • Manganous or Manganese (II) - Mn 2+

  • Manganic or Manganese (III) - Mn 3+

  • Nickelous or Nickel (II) - Ni 2+

  • Nickelic or Nickel (III) - Ni 3+

  • Plumbous or Lead (II) - Pb 2+

  • Plumbic or Lead (IV) - Pb 4+

  • Stannous or Tin (II) - Sn 2+

  • Stannic or Tin (IV) - Sn 4+

  • Antimonous or Antimony (III) - Sb3+

  • Antimonic or Antimony (V) - Sb5+

  • Arsenous or Arsenic (III) - As3+

  • Arsenic or Arsenic (V) - As5+

  • Bismuthous or Bismuth (III) - Bi3+

  • Bismuthic or Bismuth (V) - Bi5+