Common Ions and Their Charges
Cations           Name                           Cations        Name
H+                Hydrogen                       Ag+            Silver
Li+               Lithium                        Zn2+           Zinc
Na+               Sodium                         Hg22+          Mercury(I)
K+                Potassium                      NH4+           Ammonium
Rb+               Rubidium
Cs+               Cesium                         Anions         Name
Be2+              Beryllium                      NO2̄           Nitrite
Mg2+              Magnesium                      NO3̄           Nitrate
Ca2+              Calcium                        SO32 ̄         Sulfite
Ba2+              Barium                         SO42 ̄         Sulfate
Sr2+              Strontium                      HSO3 ̄         Hydrogen sulfite
Al3+              Aluminum                       HSO4̄          Hydrogen sulfate
                                                 OH ̄           Hydroxide
Anions            Name                           CN ̄           Cyanide
H-                Hydride                        PO43 ̄         Phosphate
F-                Fluoride                       HPO42 ̄        Hydrogen phosphate
Cl-               Chloride                       H2PO4 ̄        Dihydrogen phosphate
Br-               Bromide                        NCS ̄          Thiocyanate
I-                Iodide                         CO32 ̄         Carbonate
O2-               Oxide                          HCO3 ̄         Hydrogen carbonate (bicarbonate)
S2-               Sulfide                        ClO ̄          Hypochlorite
Se2-              Selenide                       ClO2 ̄         Chlorite
N3-               Nitride                        ClO3 ̄         Chlorate
P3-               Phosphide                      ClO4 ̄         Perchlorate
As3-              Arsenide                       C2H3O2 ̄       Acetate
                                                 MnO4 ̄         Permanganate
Type II Cations   Name                           Cr2O72 ̄       Dichromate
Fe3+              Iron(III)                      CrO42 ̄        Chromate
Fe2+              Iron(II)                       O22 ̄          Peroxide
Cu2+              Copper(II)                     C2O42 ̄        Oxalate
Cu+               Copper(I)                      NH2 ̄          Amide
Co3+              Cobalt(III)                    NH4+           Ammonium
Co2+              Cobalt(II)                     S2O32 ̄        Thiosulfate
Sn4+              Tin(IV)
Sn2+              Tin(II)
Pb4+              Lead(IV)
Pb2+              Lead(II)
Hg2+              Mercury(II)