| Flap 1 |
Flap 2 |
| Aluminum | Al3+ |
| Ammonium | (NH_4)+ |
| Barium | Ba2+ |
| Calcium | Ca2+ |
| Cesium | Cs+ |
| Chromium (III), chromic | Cr3+ |
| Cobalt (II), cobaltous | Co2+ |
| Copper (I), cuprous | Cu+ |
| Copper (II), cupric | Cu2+ |
| Hydrogen | H+ |
| Iron (II), ferrous | Fe2+ |
| Iron (III), ferric | Fe3+ |
| Lead (II), plumbous | Pb2+ |
| Lithium | Li+ |
| Magnesium | Mg2+ |
| Magnese (II), manganous | Mn2+ |
| Mercury (I), mercurous | Hg_22+ |
| Mercury (II), mercuric | Hg2+ |
| Potassium | K+ |
| Silver | Ag+ |
| Sodium | Na+ |
| Tin (II), stannous | Sn2+ |
| Tin (IV), stannic | Sn4+ |
| Strontium | Sr2+ |
| Zinc | Zn2+ |
