polyatomic ions

					                                              Bonding: Relevant Data
Table 1: Common Polyatomic Ions and their Names

Charge:

+1                  -1                             -2                              -3

NH4+   (ammonium)   OH-        (hydroxide)         CO3-2     (carbonate)           PO4-3    (phosphate)
                         -
                    NO3        (nitrate)           SO4-2     (sulfate)
                           -
                    ClO3 (chlorate)                CrO4-2    (chromate)
                    ClO4- (perchlorate)            Cr2O7-2   (dichromate)
                       -
                    CN         (cyanide)           HPO4-2    (hydrogen phosphate
                             -
                    C2H3O2               (acetate)
                    MnO4- (permanganate)
                    HCO3- (hydrogen carbonate)
                               (bicarbonate)
                    H2PO4- (dihydrogen phosphate)


Table 2: Other Polyatomic Ions Grouped by Element                                  Table 3: Latin Prefixes for Covalent Naming

Nitrogen            Sulfur                 Chlorine                                Number                 Prefix
                                                                                   1                      mono-
NO3-   (nitrate)    SO4-2    (sulfate)     ClO4-   (perchlorate)                   2                      di-
NO2-   (nitrite)    SO3-2    (sulfite)     ClO3-   (chlorate)                      3                      tri-
                                           ClO2-   (chlorite)                      4                      tetra-
                                           ClO-    (hypochlorite)                  5                      penta-
                                                                                   6                      hexa-
                                                                                   7                      hepta-
                                                                                   8                      octa-
                                                                                   9                      nona-
                                                                                   10                     deca-
                                                                                   11                     undeca-
                                                                                   12                     dodeca-

				
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