|
Selected Isotopes |
Half - Life |
Selected Isotopes |
Half - Life |
|---|---|---|---|
| Alkali Metals | Group I | Chalcogenides | Group VI |
| Na-22 | 2.58y | Se-72 | 8.4d |
| Cs-132 | 6.5d | Se-75 | 120d |
| Rb-83 | 83d | Te-119 | 45d |
| Alkaline Earths | Group II | Halogens | Group VII |
| Be-7 | 53.6d | I-125 | 60d |
| Ba-128 | 2.4d | I-124 | 4.2d |
| Ba-131 | 11.6d | I-123 | 10h |
| Group III | I-126 | 13.2h | |
| Ga-66 | 9.5h | I-131 | 8d |
| Group IV | Br-77 | 2.6d | |
| Sn-113 | 118d | Br-76 | 16.5h |
| Pb-200 | 21h | Useful Metals | |
| Pb-202 | 2.17d | Ti-45 | 3.1h |
| Group V | Fe-55 | 2.7y | |
| As-71 | 62h | Mn-54 | 291d |
| As-73 | 76d | Zn-65 | 245d |
| As-74 | 18d | Cu-64 | 12.8h |
| Sb-119 | 158d | Cr-51 | 27.8d |
| Sb-122 | 2.8d | Co-58 | 71d |
| Ni-56 | 6.4d | ||
| Ag-105 | 40d | ||
| Pt-191 | 3d |