| Element | Mass (u.m.a) | Element | Mass (u.m.a) |
| Li | 7 | Sn | 118 |
| Be | 9 | Sb | 121 |
| Mg | 25 | Cs | 133 |
| Si | 29 | Ba | 137 |
| P | 31 | La | 139 |
| Ca | 42 | Ce | 140 |
| Sc | 45 | Pr | 141 |
| Ti | 49 | Nd | 143 |
| V | 51 | Sm | 147 |
| Cr | 52 | Eu | 151 |
| Mn | 55 | Gd | 155 |
| Co | 59 | Tb | 159 |
| Ni | 60 | Dy | 163 |
| Cu | 65 | Ho | 165 |
| Zn | 66 | Er | 166 |
| Ga | 71 | Tm | 169 |
| Rb | 85 | Yb | 173 |
| Sr | 88 | Lu | 175 |
| Y | 89 | Hf | 179 |
| Zr | 90 | Ta | 181 |
| Nb | 93 | Pb | 208 |
| Mo | 95 | Th | 232 |
| U | 238 |