| Proton number | Neutron number | Nucleon number | Symbol | Name |
| 54 | 78 | 132 | Xe | Xenon |
| 60 | 82 | 142 | Nd | Neodymium |
| 74 | 110 | 184 | W | Tungsten |
| 77 | 116 | 193 | Ir | Iridium |
| 78 | 117 | 195 | Pt | Platinum |
| 79 | 118 | 197 | Au | Gold |
| 80 | 120 | 202 | Hg | Mercury |
| 81 | 124 | 205 | Tl | Thallium |
| 82 | 126 | 208 | Pb | Lead |
| 84 | 125 | 209 | Po | Polonium |
| 86 | 136 | 222 | Rn | Radon |
| 88 | 138 | 226 | Ra | Radium |
| 89 | 138 | 227 | Ac | Actinium |
| 90 | 142 | 232 | Th | Thorium |