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Isotopes of rhodium

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 21, 2026
Entity authorityQ1320863 ↗
Source-derived summary

Naturally occurring rhodium (45Rh) is composed of only one stable isotope, 103Rh. The most stable radioisotopes are 101Rh with a half-life of 4.07 years, 102Rh with a half-life of 207 days, and 99Rh with a half-life of 16.1 days. Thirty other radioisotopes have been characterized ranging from 89Rh to 122Rh - these have half-lives that are less than an hour except 100Rh (20.8 hours) and 105Rh (35.34 hours). There are also numerous meta states with the most stable being 102mRh with a half-life of 3.74 years and 101mRh with a half-life of 4.34 days.

The primary decay mode before the only stable isotope, 103Rh, is electron capture to ruthenium isotopes, and the primary mode after is beta emission to palladium isotopes. Mass numbers 102 and 104 are capable of decay in either sense.

List of isotopes

See also

Daughter products other than rhodium

Isotopes of palladium

Isotopes of ruthenium

Isotopes of technetium

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

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 3.0 database". Brookhaven National Laboratory.

Editorial summary

This brief starts where responsible research should: with the source description of “Isotopes of rhodium” as open-knowledge reference entry. Everything that follows is an evidence route, not borrowed authority.

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—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Isotopes, rhodium and Open-knowledge can be independently traced.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated May 21, 2026. The linked authority identifier is Q1320863. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2003 and 1016.

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This entry incorporates text from “Isotopes of rhodium” 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.