Natural holmium (67Ho) contains one observationally stable isotope, 165Ho. The below table lists 36 isotopes spanning 140Ho through 175Ho as well as 33 nuclear isomers. Among the known synthetic radioactive isotopes; the most stable one is 163Ho, with a half-life of 4,570 years. All other radioisotopes have half-lives not greater than 1.117 days in their ground states (although the metastable 166m1Ho has a half-life of about 1,200 years), and most have half-lives under 3 hours.
^( ) – Uncertainty (1σ) is given in concise form in parentheses after the corresponding last digits.
^# – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).
^ abc# – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
^Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
^Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.
Isotope masses from:
Audi, Georges; Bersillon, Olivier; Blachot, Jean; Wapstra, Aaldert Hendrik (2003), "The NUBASE evaluation of nuclear and decay properties", Nuclear Physics A, 729: 3–128, Bibcode:2003NuPhA.729....3A, doi:10.1016/j.nuclphysa.2003.11.001
Isotopic compositions and standard atomic masses from:
de Laeter, John Robert; Böhlke, John Karl; De Bièvre, Paul; Hidaka, Hiroshi; Peiser, H. Steffen; Rosman, Kevin J. R.; Taylor, Philip D. P. (2003). "Atomic weights of the elements. Review 2000 (IUPAC Technical Report)". Pure and Applied Chemistry. 75 (6): 683–800. doi:10.1351/pac200375060683.
Wieser, Michael E. (2006). "Atomic weights of the elements 2005 (IUPAC Technical Report)". Pure and Applied Chemistry. 78 (11): 2051–2066. doi:10.1351/pac200678112051.
"News & Notices: Standard Atomic Weights Revised". International Union of Pure and Applied Chemistry. 19 October 2005.
Half-life, spin, and isomer data selected from the following sources.
Audi, Georges; Bersillon, Olivier; Blachot, Jean; Wapstra, Aaldert Hendrik (2003), "The NUBASE evaluation of nuclear and decay properties", Nuclear Physics A, 729: 3–128, Bibcode:2003NuPhA.729....3A, doi:10.1016/j.nuclphysa.2003.11.001
isotopes, holmium, natural, holmium, 67ho, contains, observationally, stable, isotope, 165ho, below, table, lists, isotopes, spanning, 140ho, through, 175ho, well, nuclear, isomers, among, known, synthetic, radioactive, isotopes, most, stable, 163ho, with, hal. Natural holmium 67Ho contains one observationally stable isotope 165Ho The below table lists 36 isotopes spanning 140Ho through 175Ho as well as 33 nuclear isomers Among the known synthetic radioactive isotopes the most stable one is 163Ho with a half life of 4 570 years All other radioisotopes have half lives not greater than 1 117 days in their ground states although the metastable 166m1Ho has a half life of about 1 200 years and most have half lives under 3 hours Isotopes of holmium 67Ho Main isotopes 1 Decay abun dance half life t1 2 mode pro duct 163Ho synth 4570 y e 163Dy 164Ho synth 28 8 min e 164Dy b 164Er 165Ho 100 stable 166Ho synth 26 812 h b 166Er 166m1Ho synth 1132 6 y b 166Er 167Ho synth 3 1 h b 167ErStandard atomic weight Ar Ho 164 930329 0 000005 2 164 93 0 01 abridged 3 viewtalkeditList of isotopes edit nbsp Holmium 166m1 oxide Nuclide n 1 Z N Isotopic mass Da n 2 n 3 Half life n 4 Decaymode n 5 Daughterisotope n 6 Spin andparity n 7 n 4 Natural abundance mole fraction Excitation energy n 4 Normal proportion Range of variation 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 b 142Dy 6 to 9 p 141Dy 143Ho 67 76 142 95461 43 300 ms gt 200 ns b 143Dy 11 2 144Ho 67 77 143 95148 32 0 7 1 s b 144Dy b p 143Tb 145Ho 67 78 144 94720 32 2 4 1 s b 145Dy 11 2 145mHo 100 100 keV 100 ms 5 2 146Ho 67 79 145 94464 21 3 6 3 s b 146Dy 10 b p rare 145Tb 147Ho 67 80 146 94006 3 5 8 4 s b 147Dy 11 2 b p rare 146Tb 148Ho 67 81 147 93772 14 2 2 11 s b 148Dy 1 148m1Ho 400 100 keV 9 49 12 s b 99 92 148Dy 6 b p 08 147Tb 148m2Ho 690 100 keV 2 35 4 ms 10 149Ho 67 82 148 933775 20 21 1 2 s b 149Dy 11 2 149m1Ho 48 80 20 keV 56 3 s b 149Dy 1 2 149m2Ho 7200 350 keV gt 100 ns 150Ho 67 83 149 933496 15 76 8 18 s b 150Dy 2 150m1Ho 10 50 keV 23 3 3 s b 150Dy 9 150m2Ho 8000 keV 751 ns 151Ho 67 84 150 931688 13 35 2 1 s b 78 151Dy 11 2 a 22 147Tb 151mHo 41 0 2 keV 47 2 10 s a 77 147Tb 1 2 b 22 151Dy 152Ho 67 85 151 931714 15 161 8 3 s b 88 152Dy 2 a 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 b 99 94 153Dy 11 2 a 05 149Tb 153m1Ho 68 7 3 keV 9 3 5 min b 99 82 153Dy 1 2 a 18 149Tb 153m2Ho 2772 keV 229 2 ns 31 2 154Ho 67 87 153 930602 9 11 76 19 min b 99 98 154Dy 2 a 02 150Tb 154mHo 238 30 keV 3 10 14 min b 99 99 154Dy 8 a 001 150Tb IT rare 154Ho 155Ho 67 88 154 929103 19 48 1 min b 155Dy 5 2 155mHo 141 97 11 keV 880 80 µs 11 2 156Ho 67 89 155 92984 5 56 1 min b 156Dy 4 156m1Ho 100 50 keV 7 8 3 min b 156Dy 9 IT 156Ho 156m2Ho 52 4 5 keV 9 5 15 s 1 157Ho 67 90 156 928256 26 12 6 2 min b 157Dy 7 2 158Ho 67 91 157 928941 29 11 3 4 min b 93 158Dy 5 a 7 154Tb 158m1Ho 67 200 10 keV 28 2 min IT 81 158Ho 2 b 19 158Dy 158m2Ho 180 70 keV 21 3 23 min 9 159Ho 67 92 158 927712 4 33 05 11 min b 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 b 160Dy 5 160m1Ho 59 98 3 keV 5 02 5 h IT 65 160Ho 2 b 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 b 162Dy 1 162mHo 106 7 keV 67 0 7 min IT 62 162Ho 6 b 38 162Dy 163Ho 67 96 162 9287339 27 4570 25 y 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 b 40 164Er 164mHo 139 77 8 keV 38 0 10 min 37 5 15 5 min IT 164Ho 6 165Ho 67 98 164 9303221 27 Observationally Stable n 8 7 2 1 0000 166Ho 67 99 165 9322842 27 26 83 2 h b 166Er 0 166m1Ho 5 985 18 keV 1200 180 y b 166Er 7 166m2Ho 190 9052 20 keV 185 15 µs 3 167Ho 67 100 166 933133 6 3 003 18 h b 167Er 7 2 167mHo 259 34 11 keV 6 0 10 µs 3 2 168Ho 67 101 167 93552 3 2 99 7 min b 168Er 3 168m1Ho 59 1 keV 132 4 s IT 99 5 168Ho 6 b 5 168Er 168m2Ho 143 4 2 keV gt 4 µs 1 168m3Ho 192 6 2 keV 108 11 ns 1 169Ho 67 102 168 936872 22 4 72 10 min b 169Er 7 2 170Ho 67 103 169 93962 5 2 76 5 min b 170Er 6 170mHo 120 70 keV 43 2 s b 170Er 1 171Ho 67 104 170 94147 64 53 2 s b 171Er 7 2 172Ho 67 105 171 94482 43 25 3 s b 172Er 173Ho 67 106 172 94729 43 10 s b 173Er 7 2 174Ho 67 107 173 95115 54 8 s 175Ho 67 108 174 95405 64 5 s 7 2 This table header amp footer view mHo Excited nuclear isomer Uncertainty 1s is given in concise form in parentheses after the corresponding last digits Atomic mass marked value and uncertainty derived not from purely experimental data but at least partly from trends from the Mass Surface TMS a b c Values marked are not purely derived from experimental data but at least partly from trends of neighboring nuclides TNN Modes of decay EC Electron capture IT Isomeric transition Bold symbol as daughter Daughter product is stable spin value Indicates spin with weak assignment arguments Believed to undergo a decay to 161TbReferences edit Kondev F G Wang M Huang W J Naimi S Audi G 2021 The NUBASE2020 evaluation of nuclear properties PDF Chinese Physics C 45 3 030001 doi 10 1088 1674 1137 abddae Standard Atomic Weights Holmium CIAAW 2021 Prohaska Thomas Irrgeher Johanna Benefield Jacqueline Bohlke John K Chesson Lesley A Coplen Tyler B Ding Tiping Dunn Philip J H Groning Manfred Holden Norman E Meijer Harro A J 2022 05 04 Standard atomic weights of the elements 2021 IUPAC Technical Report Pure and Applied Chemistry doi 10 1515 pac 2019 0603 ISSN 1365 3075 Isotope masses from Audi Georges Bersillon Olivier Blachot Jean Wapstra Aaldert Hendrik 2003 The NUBASE evaluation of nuclear and decay properties Nuclear Physics A 729 3 128 Bibcode 2003NuPhA 729 3A doi 10 1016 j nuclphysa 2003 11 001 Isotopic compositions and standard atomic masses from de Laeter John Robert Bohlke John Karl De Bievre Paul Hidaka Hiroshi Peiser H Steffen Rosman Kevin J R Taylor Philip D P 2003 Atomic weights of the elements Review 2000 IUPAC Technical Report Pure and Applied Chemistry 75 6 683 800 doi 10 1351 pac200375060683 Wieser Michael E 2006 Atomic weights of the elements 2005 IUPAC Technical Report Pure and Applied Chemistry 78 11 2051 2066 doi 10 1351 pac200678112051 News amp Notices Standard Atomic Weights Revised International Union of Pure and Applied Chemistry 19 October 2005 Half life spin and isomer data selected from the following sources Audi Georges Bersillon Olivier Blachot Jean Wapstra Aaldert Hendrik 2003 The NUBASE evaluation of nuclear and decay properties Nuclear Physics A 729 3 128 Bibcode 2003NuPhA 729 3A doi 10 1016 j nuclphysa 2003 11 001 National Nuclear Data Center NuDat 2 x database Brookhaven National Laboratory Holden Norman E 2004 11 Table of the Isotopes In Lide David R ed CRC Handbook of Chemistry and Physics 85th ed Boca Raton Florida CRC Press ISBN 978 0 8493 0485 9 Retrieved from https en wikipedia org w index php title Isotopes of holmium amp oldid 1220306975 Holmium 163, wikipedia, wiki, book, books, library,
