Table
| nuclide symbol |
Z(p) | N(n) | isotopic mass (u) |
half-life | decay mode(s) |
daughter isotope(s) |
nuclear spin |
|---|---|---|---|---|---|---|---|
| excitation energy | |||||||
| 253Rf | 104 | 149 | 253.10069(49)# | 13(5) ms | SF (51%) | (various) | (7/2)(+#) |
| α (49%) | 249No | ||||||
| 253mRf | 200(150)# keV | 52(14) µs |
(1/2)(-#) | ||||
| 254Rf | 104 | 150 | 254.10018(31)# | 23(3) µs | SF (99.7%) | (various) | 0+ |
| α (.3%) | 250No | ||||||
| 255Rf | 104 | 151 | 255.10134(19)# | 1.64(11) s | SF (52%) | (various) | (9/2-)# |
| α (48%) | 251No | ||||||
| 256Rf | 104 | 152 | 256.101166(26) | 6.45(14) ms | SF (96%) | (various) | 0+ |
| α (6%) | 252No | ||||||
| 257Rf | 104 | 153 | 257.10299(11)# | 4.7(3) s | α (79%) | 253No | (1/2+) |
| β+ (18%) | 257Lr | ||||||
| SF (2.4%) | (various) | ||||||
| 257mRf | 114(17) keV | 3.9(4) s | (11/2-) | ||||
| 258Rf | 104 | 154 | 258.10349(22)# | 12(2) ms | SF (87%) | (various) | 0+ |
| α (13%) | 254No | ||||||
| 259Rf | 104 | 155 | 259.10564(8)# | 2.8(4) s | α (93%) | 255No | 7/2+# |
| SF (7%) | (various) | ||||||
| β+ (.3%) | 259Lr | ||||||
| 260Rf | 104 | 156 | 260.10644(22)# | 21(1) ms | SF (98%) | (various) | 0+ |
| α (2%) | 256No | ||||||
| 261Rf | 104 | 157 | 261.10877(3) | 5.5(25) s | α (76%) | 257No | 3/2+# |
| β+ (14%) | 261Lr | ||||||
| SF (10%) | (various) | ||||||
| 261mRf | 70(100)# keV | 81(9) s | β+ | 261Lr | 9/2+# | ||
| α (rare) | 257No | ||||||
| 262Rf | 104 | 158 | 262.10993(30)# | 2.3(4) s | SF (99.2%) | (various) | 0+ |
| α (.8%) | 258No | ||||||
| 262mRf | 600(400)# keV | 47(5) ms | SF | (various) | high | ||
| 263Rf | 104 | 159 | 263.11255(20)# | 11(3) min | SF (70%) | (various) | 3/2+# |
| α (30%) | 259No | ||||||
| 265Rf | 104 | 161 | 2.5 min | SF | (various) | ||
| 266Rf | 104 | 162 | 266.11796(58)# | 10# h | 0+ | ||
| 267Rf | 104 | 163 | 267.12153(62)# | 5# h |
SF | (various) | |
| 268Rf | 104 | 164 | 268.12364(76)# | 1# h | 0+ | ||
Read more about this topic: Isotopes Of Rutherfordium
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