| Rb (přírodní) | neomezeno | neomezeno | 1 × 104 | 1 × 107 |
| Rhenium (75) | | | | |
| Re-184 | 1 × 100 | 1 × 100 | 1 × 101 | 1 × 106 |
| Re-184m | 3 × 100 | 1 × 100 | 1 × 102 | 1 × 106 |
| Re-186 | 2 × 100 | 6 × 10-1 | 1 × 103 | 1 × 106 |
| Re-187 | neomezeno | neomezeno | 1 × 106 | 1 × 109 |
| Re-188 | 4 × 10-1 | 4 × 10-1 | 1 × 102 | 1 × 105 |
| Re-189a) | 3 × 100 | 6 × 10-1 | 1 × 102 | 1 × 106 |
| Re (přírodní) | neomezeno | neomezeno | 1 × 106 | 1 × 109 |
| Rhodium (45) | | | | |
| Rh-99 | 2 × 100 | 2 × 100 | 1 × 101 | 1 × 106 |
| Rh-101 | 4 × 100 | 3 × 100 | 1 × 102 | 1 × 107 |
| Rh-102 | 5 × 10-1 | 5 × 10-1 | 1 × 101 | 1 × 106 |
| Rh-102m | 2 × 100 | 2 × 100 | 1 × 102 | 1 × 106 |
| Rh-103m | 4 × 101 | 4 × 101 | 1 × 104 | 1 × 108 |
| Rh-105 | 1 × 101 | 8 × 10-1 | 1 × 102 | 1 × 107 |
| Radon (86) | | | | |
| Rn-222a) | 3 × 10-1 | 4 × 10-3 | 1 × 101 b) | 1 × 108 b) |
| Ruthenium (44) | | | | |
| Ru-97 | 5 × 100 | 5 × 100 | 1 × 102 | 1 × 107 |
| Ru-103a) | 2 × 100 | 2 × 100 | 1 × 102 | 1 × 106 |
| Ru-105 | 1 × 100 | 6 × 10-1 | 1 × 101 | 1 × 106 |
| Ru-106a) | 2 × 10-1 | 2 × 10-1 | 1 × 102 b) | 1 × 105 b) |
| Síra (16) | | | | |
| S-35 | 4 × 101 | 3 × 100 | 1 × 105 | 1 × 108 |
| Antimon (51) | | | | |
| Sb-122 | 4 × 10-1 | 4 × 10-1 | 1 × 102 | 1 × 104 |
| Sb-124 | 6 × 10-1 | 6 × 10-1 | 1 × 101 | 1 × 106 |
| Sb-125 | 2 × 100 | 1 × 100 | 1 × 102 | 1 × 106 |
| Sb-126 | 4 × 10-1 | 4 × 10-1 | 1 × 101 | 1 × 105 |
| Skandium (21) | | | | |
| Sc-44 | 5 × 10-1 | 5 × 10-1 | 1 × 101 | 1 × 105 |
| Sc-46 | 5 × 10-1 | 5 × 10-1 | 1 × 101 | 1 × 106 |
| Sc-47 | 1 × 101 | 7 × 10-1 | 1 × 102 | 1 × 106 |
| Sc-48 | 3 × 10-1 | 3 × 10-1 | 1 × 101 | 1 × 105 |
| Selen (34) | | | | |
| Se-75 | 3 × 100 | 3 × 100 | 1 × 102 | 1 × 106 |
| Se-79 | 4 × 101 | 2 × 100 | 1 × 104 | 1 × 107 |
| Křemík (14) | | | | |
| Si-31 | 6 × 10-1 | 6 × 10-1 | 1 × 103 | 1 × 106 |
| Si-32 | 4 × 101 | 5 × 10-1 | 1 × 103 | 1 × 106 |
| Samarium (62) | | | | |
| Sm-145 | 1 × 101 | 1 × 101 | 1 × 102 | 1 × 107 |
| Sm-147 | neomezeno | neomezeno | 1 × 101 | 1 × 104 |
| Sm-151 | 4 × 101 | 1 × 101 | 1 × 104 | 1 × 108 |
| Sm-153 | 9 × 100 | 6 × 10-1 | 1 × 102 | 1 × 106 |
| Cín (50) | | | | |
| Sn-113a) | 4 × 100 | 2 × 100 | 1 × 103 | 1 × 107 |
| Sn-117m | 7 × 100 | 4 × 10-1 | 1 × 102 | 1 × 106 |
| Sn-119m | 4 × 101 | 3 × 101 | 1 × 103 | 1 × 107 |
| Sn-121ma) | 4 × 101 | 9 × 10-1 | 1 × 103 | 1 × 107 |
| Sn-123 | 8 × 10-1 | 6 × 10-1 | 1 × 103 | 1 × 106 |
| Sn-125 | 4 × 10-1 | 4 × 10-1 | 1 × 102 | 1 × 105 |
| Sn-126a) | 6 × 10-1 | 4 × 10-1 | 1 × 101 | 1 × 105 |
| Stroncium (38) | | | | |
| Sr-82a) | 2 × 10-1 | 2 × 10-1 | 1 × 101 | 1 × 105 |
| Sr-85 | 2 × 100 | 2 × 100 | 1 × 102 | 1 × 106 |
| Sr-85m | 5 × 100 | 5 × 100 | 1 × 102 | 1 × 107 |
| Sr-87m | 3 × 100 | 3 × 100 | 1 × 102 | 1 × 106 |
| Sr-89 | 6 × 10-1 | 6 × 10-1 | 1 × 103 | 1 × 106 |
| Sr-90a) | 3 × 10-1 | 3 × 10-1 | 1 × 102 b) | 1 × 104 b) |
| Sr-91a) | 3 × 10-1 | 3 × 10-1 | 1 × 101 | 1 × 105 |
| Sr-92a) | 1 × 100 | 3 × 10-1 | 1 × 101 | 1 × 106 |
| Tritium (1) | | | | |
| T(H-3) | 4 × 101 | 4 × 101 | 1 × 106 | 1 × 109 |
| Tantal (73) | | | | |
| Ta-178 (dlouho životný) | 1 × 100 | 8 × 10-1 | 1 × 101 | 1 × 106 |
| Ta-179 | 3 × 101 | 3 × 101 | 1 × 103 | 1 × 107 |
| Ta-182 | 9 × 10-1 | 5 × 10-1 | 1 × 101 | 1 × 104 |
| Terbium (65) | | | | |
| Tb-157 | 4 × 101 | 4 × 101 | 1 × 104 | 1 × 107 |
| Tb-158 | 1 × 100 | 1 × 100 | 1 × 101 | 1 × 106 |
| Tb-160 | 1 × 100 | 6 × 10-1 | 1 × 101 | 1 × 106 |
| Technecium (43) | | | | |
| Tc-95ma) | 2 × 100 | 2 × 100 | 1 × 101 | 1 × 106 |
| Tc-96 | 4 × 10-1 | 4 × 10-1 | 1 × 101 | 1 × 106 |
| Tc-96ma) | 4 × 10-1 | 4 × 10-1 | 1 × 103 | 1 × 107 |
| Tc-97 | neomezeno | neomezeno | 1 × 103 | 1 × 108 |
| Tc-97m | 4 × 101 | 1 × 100 | 1 × 103 | 1 × 107 |
| Tc-98 | 8 × 10-1 | 7 × 10-1 | 1 × 101 | 1 × 106 |
| Tc-99 | 4 × 101 | 9 × 10-1 | 1 × 104 | 1 × 107 |
| Tc-99m | 1 × 101 | 4 × 100 | 1 × 102 | 1 × 107 |
| Telur (52) | | | | |
| Te-121 | 2 × 100 | 2 × 100 | 1 × 101 | 1 × 106 |
| Te-121m | 5 × 100 | 3 × 100 | 1 × 102 | 1 × 106 |
| Te-123m | 8 × 100 | 1 × 100 | 1 × 102 | 1 × 107 |
| Te-125m | 2 × 101 | 9 × 10-1 | 1 × 103 | 1 × 107 |
| Te-127 | 2 × 101 | 7 × 10-1 | 1 × 103 | 1 × 106 |
| Te-127ma) | 2 × 101 | 5 × 10-1 | 1 × 103 | 1 × 107 |
| Te-129 | 7 × 10-1 | 6 × 10-1 | 1 × 102 | 1 × 106 |
| Te-129ma) | 8 × 10-1 | 4 × 10-1 | 1 × 103 | 1 × 106 |
| Te-131ma) | 7 × 10-1 | 5 × 10-1 | 1 × 101 | 1 × 106 |
| Te-132a) | 5 × 10-1 | 4 × 10-1 | 1 × 102 | 1 × 107 |
| Thorium (90) | | | | |
| Th-227 | 1 × 101 | 5 × 10-3 | 1 × 101 | 1 × 104 |
| Th-228a) | 5 × 10-1 | 1 × 10-3 | 1 × 100 b) | 1 × 104 b) |
| Th-229 | 5 × 100 | 5 × 10-4 | 1 × 100 b) | 1 × 103 b) |
| Th-230 | 1 × 101 | 1 × 10-3 | 1 × 100 | 1 × 104 |
| Th-231 | 4 × 101 | 2 × 10-2 | 1 × 103 | 1 × 107 |
| Th-232 | neomezeno | neomezeno | 1 × 101 | 1 × 104 |
| Th-234a) | 3 × 10-1 | 3 × 10-1 | 1 × 103 b) | 1 × 105 b) |
| Th (přírodní) | neomezeno | neomezeno | 1 × 100 b) | 1 × 103 b) |
| Titan (22) | | | | |
| Ti-44a) | 5 × 10-1 | 4 × 10-1 | 1 × 101 | 1 × 105 |
| Thalium (81) | | | | |
| TI-200 | 9 × 10-1 | 9 × 10-1 | 1 × 101 | 1 × 106 |
| TI-201 | 1 × 101 | 4 × 100 | 1 × 102 | 1 × 106 |
| TI-202 | 2 × 100 | 2 × 100 | 1 × 102 | 1 × 106 |
| TI-204 | 1 × 101 | 7 × 10-1 | 1 × 104 | 1 × 104 |
| Thulium (69) | | | | |
| Tm-167 | 7 × 100 | 8 × 10-1 | 1 × 102 | 1 × 106 |
| Tm-170 | 3 × 100 | 6 × 10-1 | 1 × 103 | 1 × 106 |
| Tm-171 | 4 × 101 | 4 × 101 | 1 × 104 | 1 × 108 |
| Uran (92) | | | | |
| U-230 (rychlá absorpce plícemi)a)d) | 4 × 101 | 1 × 10-1 | 1 × 101 b) | 1 × 105 b) |
| U-230 (střední absorpce plícemi)a)e) | 4 × 101 | 4 × 10-3 | 1 × 101 | 1 × 104 |
| U-230 (pomalá absorpce plícemi)a)f) | 3 × 101 | 3 × 10-3 | 1 × 101 | 1 × 104 |
| U-232 (rychlá absorpce plícemi)d) | 4 × 101 | 1 × 10-2 | 1 × 100 b) | 1 × 103 b) |
| U-232 (střední absorpce plícemi)e) | 4 × 101 | 7 × 10-3 | 1 × 101 | 1 × 104 |
| U-232 (pomalá absorpce plícemi)f) | 1 × 101 | 1 × 10-3 | 1 × 101 | 1 × 104 |
| U-233 (rychlá absorpce plícemi)d) | 4 × 101 | 9 × 10-2 | 1 × 101 | 1 × 104 |
| U-233 (střední absorpce plícemi)e) | 4 × 101 | 2 × 10-2 | 1 × 102 | 1 × 105 |
| U-233 (pomalá absorpce plícemi)f) | 4 × 101 | 6 × 10-3 | 1 × 101 | 1 × 105 |
| U-234 (rychlá absorpce plícemi)d) | 4 × 101 | 9 × 10-2 | 1 × 101 | 1 × 104 |
| U-234 (střední absorpce plícemi)e) | 4 × 101 | 2 × 10-2 | 1 × 102 | 1 × 105 |
| U-234 (pomalá absorpce plícemi)f) | 4 × 101 | 6 × 10-3 | 1 × 101 | 1 × 105 |
| U-235 (všechny druhy absorpce plícemi)a)d)e)f) | neomezeno | neomezeno | 1 × 101 b) | 1 × 104 b) |
| U-236 (rychlá absorpce plícemi)d) | neomezeno | neomezeno | 1 × 101 | 1 × 104 |
| U-236 (střední absorpce plícemi)e) | 4 × 101 | 2 × 10-2 | 1 × 102 | 1 × 105 |