| S 2- | O 2- | I - |
| F - | Cl - | Br - |
| Zn 2+ | Ag + | U 6+ |
| U 3+ | Sn 4+ | Sn 2+ |
| Na + | Mn 4+ | Mn 2+ |
| Mg 2+ | Pb 4+ | Pb 2+ |
| Li + | Hg 2+ | Hg + |
| Cu 2+ | K + | Fe 3+ |
| Fe 2+ | Au 3+ | Au + |
| Ca 2+ | Ba 2+ | Al 3+ |
| jodide-ion | oxide-ion | sulfide-ion |
| bromide-ion | chloride-ion | fluoride-ion |
| uraan(VI)ion | zilverion | zinkion |
| tin(II)ion | tin(IV)ion | uraan(III)ion |
| mangaan(II)ion | mangaan(IV)ion | natriumion |
| lood(II)ion | lood(IV)ion | magnesiumion |
| kwik(I)ion | kwik(II)ion | lithiumion |
| ijzer(III)ion | kaliumion | koper(II)ion |
| goud(I)ion | goud(III)ion | ijzer(II)ion |
| aluminiumion | bariumion | calciumion |