Table
| nuclide symbol |
Z(p) | N(n) | isotopic mass (u) |
half-life | decay mode(s) |
daughter isotope(s) |
nuclear spin |
representative isotopic composition (mole fraction) |
range of natural variation (mole fraction) |
|---|---|---|---|---|---|---|---|---|---|
| excitation energy | |||||||||
| 140Ho | 67 | 73 | 139.96854(54)# | 6(3) ms | 8+# | ||||
| 141Ho | 67 | 74 | 140.96310(54)# | 4.1(3) ms | (7/2-) | ||||
| 141mHo | 66(2) keV | 6.4(8) µs | (1/2+) | ||||||
| 142Ho | 67 | 75 | 141.95977(54)# | 400(100) ms | β+ | 142Dy | (6 to 9) | ||
| p | 141Dy | ||||||||
| 143Ho | 67 | 76 | 142.95461(43)# | 300# ms |
β+ | 143Dy | 11/2-# | ||
| 144Ho | 67 | 77 | 143.95148(32)# | 0.7(1) s | β+ | 144Dy | |||
| β+, p | 143Tb | ||||||||
| 145Ho | 67 | 78 | 144.94720(32)# | 2.4(1) s | β+ | 145Dy | (11/2-) | ||
| 145mHo | 100(100)# keV | 100# ms | 5/2+# | ||||||
| 146Ho | 67 | 79 | 145.94464(21)# | 3.6(3) s | β+ | 146Dy | (10+) | ||
| β+, p (rare) | 145Tb | ||||||||
| 147Ho | 67 | 80 | 146.94006(3) | 5.8(4) s | β+ | 147Dy | (11/2-) | ||
| β+, p (rare) | 146Tb | ||||||||
| 148Ho | 67 | 81 | 147.93772(14) | 2.2(11) s | β+ | 148Dy | (1+) | ||
| 148m1Ho | 400(100)# keV | 9.49(12) s | β+ (99.92%) | 148Dy | (6)- | ||||
| β+, p (.08%) | 147Tb | ||||||||
| 148m2Ho | 690(100)# keV | 2.35(4) ms | (10+) | ||||||
| 149Ho | 67 | 82 | 148.933775(20) | 21.1(2) s | β+ | 149Dy | (11/2-) | ||
| 149m1Ho | 48.80(20) keV | 56(3) s | β+ | 149Dy | (1/2+) | ||||
| 149m2Ho | 7200(350) keV | >=100 ns | |||||||
| 150Ho | 67 | 83 | 149.933496(15) | 76.8(18) s | β+ | 150Dy | 2- | ||
| 150m1Ho | -10(50) keV | 23.3(3) s | β+ | 150Dy | (9)+ | ||||
| 150m2Ho | ~8000 keV | 751 ns | |||||||
| 151Ho | 67 | 84 | 150.931688(13) | 35.2(1) s | β+ (78%) | 151Dy | 11/2(-) | ||
| α (22%) | 147Tb | ||||||||
| 151mHo | 41.0(2) keV | 47.2(10) s | α (77%) | 147Tb | 1/2(+) | ||||
| β+ (22%) | 151Dy | ||||||||
| 152Ho | 67 | 85 | 151.931714(15) | 161.8(3) s | β+ (88%) | 152Dy | 2- | ||
| α (12%) | 148Tb | ||||||||
| 152m1Ho | 160(1) keV | 50.0(4) s | 9+ | ||||||
| 152m2Ho | 3019.59(19) keV | 8.4(3) µs | 19- | ||||||
| 153Ho | 67 | 86 | 152.930199(6) | 2.01(3) min | β+ (99.94%) | 153Dy | 11/2- | ||
| α (.05%) | 149Tb | ||||||||
| 153m1Ho | 68.7(3) keV | 9.3(5) min | β+ (99.82%) | 153Dy | 1/2+ | ||||
| α (.18%) | 149Tb | ||||||||
| 153m2Ho | 2772 keV | 229(2) ns | (31/2+) | ||||||
| 154Ho | 67 | 87 | 153.930602(9) | 11.76(19) min | β+ (99.98%) | 154Dy | 2- | ||
| α (.02%) | 150Tb | ||||||||
| 154mHo | 238(30) keV | 3.10(14) min | β+ (99.99%) | 154Dy | 8+ | ||||
| α (.001%) | 150Tb | ||||||||
| IT (rare) | 154Ho | ||||||||
| 155Ho | 67 | 88 | 154.929103(19) | 48(1) min | β+ | 155Dy | 5/2+ | ||
| 155mHo | 141.97(11) keV | 880(80) µs | 11/2- | ||||||
| 156Ho | 67 | 89 | 155.92984(5) | 56(1) min | β+ | 156Dy | 4- | ||
| 156m1Ho | 100(50)# keV | 7.8(3) min | β+ | 156Dy | (9+) | ||||
| IT | 156Ho | ||||||||
| 156m2Ho | 52.4(5) keV | 9.5(15) s | 1- | ||||||
| 157Ho | 67 | 90 | 156.928256(26) | 12.6(2) min | β+ | 157Dy | 7/2- | ||
| 158Ho | 67 | 91 | 157.928941(29) | 11.3(4) min | β+ (93%) | 158Dy | 5+ | ||
| α (7%) | 154Tb | ||||||||
| 158m1Ho | 67.200(10) keV | 28(2) min | IT (81%) | 158Ho | 2- | ||||
| β+ (19%) | 158Dy | ||||||||
| 158m2Ho | 180(70)# keV | 21.3(23) min | (9+) | ||||||
| 159Ho | 67 | 92 | 158.927712(4) | 33.05(11) min | β+ | 159Dy | 7/2- | ||
| 159mHo | 205.91(5) keV | 8.30(8) s | IT | 159Ho | 1/2+ | ||||
| 160Ho | 67 | 93 | 159.928729(16) | 25.6(3) min | β+ | 160Dy | 5+ | ||
| 160m1Ho | 59.98(3) keV | 5.02(5) h | IT (65%) | 160Ho | 2- | ||||
| β+ (35%) | 160Dy | ||||||||
| 160m2Ho | 197(16) keV | 3 s | (9+) | ||||||
| 161Ho | 67 | 94 | 160.927855(3) | 2.48(5) h | EC | 161Dy | 7/2- | ||
| 161mHo | 211.16(3) keV | 6.76(7) s | IT | 161Ho | 1/2+ | ||||
| 162Ho | 67 | 95 | 161.929096(4) | 15.0(10) min | β+ | 162Dy | 1+ | ||
| 162mHo | 106(7) keV | 67.0(7) min | IT (62%) | 162Ho | 6- | ||||
| β+ (38%) | 162Dy | ||||||||
| 163Ho | 67 | 96 | 162.9287339(27) | 4570(25) a | EC | 163Dy | 7/2- | ||
| 163mHo | 297.88(7) keV | 1.09(3) s | IT | 163Ho | 1/2+ | ||||
| 164Ho | 67 | 97 | 163.9302335(30) | 29(1) min | EC (60%) | 164Dy | 1+ | ||
| β- (40%) | 164Er | ||||||||
| 164mHo | 139.77(8) keV | 38.0(10) min |
IT | 164Ho | 6- | ||||
| 165Ho | 67 | 98 | 164.9303221(27) | Observationally Stable | 7/2- | 1.0000 | |||
| 166Ho | 67 | 99 | 165.9322842(27) | 26.83(2) h | β- | 166Er | 0- | ||
| 166m1Ho | 5.985(18) keV | 1,200(180) a | β- | 166Er | (7)- | ||||
| 166m2Ho | 190.9052(20) keV | 185(15) µs | 3+ | ||||||
| 167Ho | 67 | 100 | 166.933133(6) | 3.003(18) h | β- | 167Er | 7/2- | ||
| 167mHo | 259.34(11) keV | 6.0(10) µs | 3/2+ | ||||||
| 168Ho | 67 | 101 | 167.93552(3) | 2.99(7) min | β- | 168Er | 3+ | ||
| 168m1Ho | 59(1) keV | 132(4) s | IT (99.5%) | 168Ho | (6+) | ||||
| β- (.5%) | 168Er | ||||||||
| 168m2Ho | 143.4(2) keV | >4 µs | (1)- | ||||||
| 168m3Ho | 192.6(2) keV | 108(11) ns | 1+ | ||||||
| 169Ho | 67 | 102 | 168.936872(22) | 4.72(10) min | β- | 169Er | 7/2- | ||
| 170Ho | 67 | 103 | 169.93962(5) | 2.76(5) min | β- | 170Er | 6+# | ||
| 170mHo | 120(70) keV | 43(2) s | β- | 170Er | (1+) | ||||
| 171Ho | 67 | 104 | 170.94147(64) | 53(2) s | β- | 171Er | 7/2-# | ||
| 172Ho | 67 | 105 | 171.94482(43)# | 25(3) s | β- | 172Er | |||
| 173Ho | 67 | 106 | 172.94729(43)# | 10# s | β- | 173Er | 7/2-# | ||
| 174Ho | 67 | 107 | 173.95115(54)# | 8# s | |||||
| 175Ho | 67 | 108 | 174.95405(64)# | 5# s | 7/2-# | ||||
Read more about this topic: Isotopes Of Holmium
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