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Thulium-170 has a binding energy of 8 105.5144(43) keV per nucleon and a half-life of 128.6 ± 0.3 d.It decays by β − decay to 170 Yb about 99.869% of the time, and by electron capture to 170 Er about 0.131% of the time. [1]
Radioactive isotope table "lists ALL radioactive nuclei with a half-life greater than 1000 years", incorporated in the list above. The NUBASE2020 evaluation of nuclear physics properties F.G. Kondev et al. 2021 Chinese Phys. C 45 030001. The PDF of this article lists the half-lives of all known radioactives nuclides.
Naturally occurring thulium (69 Tm) is composed of one stable isotope, 169 Tm (100% natural abundance).Thirty-nine radioisotopes have been characterized, with the most stable being 171 Tm with a half-life of 1.92 years, 170 Tm with a half-life of 128.6 days, 168 Tm with a half-life of 93.1 days, and 167 Tm with a half-life of 9.25 days.
Thulium-169 is thulium's only primordial isotope and is the only isotope of thulium that is thought to be stable; it is predicted to undergo alpha decay to holmium-165 with a very long half-life. [ 10 ] [ 22 ] The longest-lived radioisotopes are thulium-171, which has a half-life of 1.92 years, and thulium-170 , which has a half-life of 128.6 days.
170 Yb: 171 Tm synth 1.92 y: β − ... This infobox contains the table of § Main isotopes, and the § Standard atomic weight. For example, ... Half-life time ...
Of the first 82 elements in the periodic table, 80 have isotopes considered to be stable. [1] The 83rd element, bismuth, was traditionally regarded as having the heaviest stable isotope, bismuth-209, but in 2003 researchers in Orsay, France, measured the half-life of 209 Bi to be 1.9 × 10 19 years.
Natural ytterbium is composed of seven stable isotopes: 168 Yb, 170 Yb, 171 Yb, 172 Yb, 173 Yb, 174 Yb, and 176 Yb, with 174 Yb being the most common, at 31.8% of the natural abundance). Thirty-two radioisotopes have been observed, with the most stable ones being 169 Yb with a half-life of 32.0 days, 175 Yb with a half-life of 4.18 days, and ...
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