(Salte)

findes ud fra
                           anioner                           kationer
                             Cu²⁺                                 S^2-

                             Mn³⁺                                SO₄^2-

                             Fe²⁺                                 PO₄^3-

                             Sn²⁺                                 Cl^-

                             Cu²⁺                                 O^2-

                             Zn²⁺                                 Br^-

                             Co³⁺                                OH^-

                             Ti⁴⁺                                  O^2-

.

Kravet er et udadtil ladningsneutralt molekyle.