Isotopes of phosphorus

Isotopes of phosphorus (15P)
Main isotopes Decay
abun­dance half-life (t1/2) mode pro­duct
31P 100% stable
32P trace 14.269 d β 32S
33P trace 25.35 d β 33S
Standard atomic weight Ar°(P)

Although phosphorus (15P) has 22 isotopes from 26P to 47P, only 31P is stable; as such, phosphorus is considered a monoisotopic element. The longest-lived radioactive isotopes are 33P with a half-life of 25.34 days and 32P with a half-life of 14.268 days.[3][4] All others have half-lives of under 2.5 minutes, most under a second. The least stable known isotope is 47P, with a half-life of 2 milliseconds.

  1. ^ "Standard Atomic Weights: Phosphorus". CIAAW. 2013.
  2. ^ 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.
  3. ^ PubChem. "Phosphorus Radioisotopes". pubchem.ncbi.nlm.nih.gov. Retrieved 2022-04-08.
  4. ^ "phosphorus-33 atom (CHEBI:37973)". www.ebi.ac.uk. Retrieved 2022-04-08.