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Isotopes of holmium

list of isotopes having 67 protons in their nuclei

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 9, 2026
Entity authorityQ466737 ↗
Source-derived summary

Natural holmium (67Ho) contains one observationally stable isotope, 165Ho. The known isotopes of holmium range from 140Ho to 175Ho. The primary decay mode before the stable 165Ho, is beta plus decay to dysprosium isotopes, and the primary mode after is beta minus decay to erbium isotopes.

Among the synthetic radioactive isotopes the most stable is 163Ho with a half-life of 4,570 years, the next most stable is 166Ho having a half-life of 26.812 hours, and others are under 4 hours. The isomeric nuclide 166m1Ho, however, has a half-life of 1,133 years, much the longest of the meta states.

Holmium-166 (ground state) has been studied for medical application.

List of isotopes

See also

Daughter products other than holmium

Isotopes of erbium

Isotopes of dysprosium

Isotopes of terbium

References

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.

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Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—2003, 1016, 2000—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Isotopes, holmium and list can be independently traced.
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This entry incorporates text from “Isotopes of holmium” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.