Naturally occurringrhenium (₇₅Re) is 37.4%¹⁸⁵Re, which isstable (although it ispredicted to decay), and 62.6%¹⁸⁷Re, which isunstable but has a very longhalf-life (4.12×10¹⁰ years).^[4] Among elements with a known stable isotope, onlyindium andtellurium similarly occur with a stable isotope in lower abundance than the long-lived radioactive isotope.

There are 36 other unstable isotopes recognized, the longest-lived of which are¹⁸³Re with a half-life of 70 days,¹⁸⁴Re with a half-life of 38 days,¹⁸⁶Re with a half-life of 3.7186 days,¹⁸²Re with a half-life of 64.0 hours, and¹⁸⁹Re with a half-life of 24.3 hours. There are also numerousisomers, the longest-lived of which are^186mRe with a half-life of 200,000 years and^184mRe with a half-life of 177.25 days.^[5] All others have half-lives less than a day.

This sectionneeds expansion with: Usage in medicine, ATC=V10. You can help byadding to it.(October 2019)

Rhenium-186 is a beta emitter andradiopharmaceutical that is used to treatglioblastoma,^[10] is used intheranostic medicine^[11] and has been reported to be used in synoviorthesis.^[12]

• 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
  • 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.

• Isotopes of rhenium
• Rhenium
• Lists of isotopes by element

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