Isotopes of promethium

Naturally occurring isotopes

This table shows information about naturally occuring isotopes, their atomic masses, their natural abundances, their nuclear spins, and their magnetic moments. Further data for radioisotopes (radioactive isotopes) of promethium are listed (including any which occur naturally) below.
Isotope Atomic mass (ma/u) Natural abundance (atom %) Nuclear spin (I) Magnetic moment (μ/μN)
nil

Isotopic abundances of Pm
In the above picture, the most intense ion is set to 100% since this corresponds best to the output from a mass spectrometer. This is not to be confused with the relative percentage isotope abundances which total 100% for all the naturally occurring isotopes.

Radiosotope data

Further data for naturally occuring isotopes of promethium are listed above. This table gives information about some radiosotopes of promethium, their masses, their half-lives, their modes of decay, their nuclear spins, and their nuclear magnetic moments.
Isotope Mass Half-life Mode of decay Nuclear spin Nuclear magnetic moment
143Pm 142.910928 265 d EC to 143Nd 5/2 3.8
144Pm 143.912586 360 d EC to 144Nd 5 1.7
145Pm 144.912743 (4) 17.7 y EC to 145Nd; α to 141Pr 5/2
146Pm 145.914693 5.53 y EC to 146Nd; β- to 146Sm 3
147Pm 146.915134 2.6234 y β- to 147Sm 7/2 2.6
148Pm 147.91747 5.37 d β- to 148Sm 1 2.0
149Pm 148.918330 2.212 d β- to 149Sm 7/2 3.3
150Pm 149.92098 2.68 h β- to 150Sm 1
151Pm 150.92120 1.183 d β- to 151Sm 5/2 1.8

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References

  1. Naturally occurring isotope abundances: Commission on Atomic Weights and Isotopic Abundances report for the International Union of Pure and Applied Chemistry in Isotopic Compositions of the Elements 1989, Pure and Applied Chemistry, 1998, 70, 217. [Copyright 1998 IUPAC]
  2. For further information about radioisotopes see Jonghwa Chang's (Korea Atomic Energy Research Institute) Table of the Nuclides
  3. Masses, nuclear spins, and magnetic moments: I. Mills, T. Cvitas, K. Homann, N. Kallay, and K. Kuchitsu in Quantities, Units and Symbols in Physical Chemistry, Blackwell Scientific Publications, Oxford, UK, 1988. [Copyright 1988 IUPAC]

NMR Properties of promethium

Common reference compound: .

Table of NMR-active nucleus propeties of promethium
  Isotope 1 Isotope 2 Isotope 3
Isotope 147Pm
Natural abundance /% 0
Spin (I) 7/2
Frequency relative to 1H = 100 (MHz) 13.51
Receptivity, DP, relative to 1H = 1.00 -
Receptivity, DC, relative to 13C = 1.00 -
Magnetogyric ratio, γ (107 rad T-1 s-1) 3.613
Magnetic moment, μ (μN)
Nuclear quadrupole moment, Q/millibarn 740(200)
Line width factor, 1056l (m4) 0.061

References

  1. R.K. Harris in Encyclopedia of Nuclear Magnetic Resonance, D.M. Granty and R.K. Harris, (eds.), vol. 5, John Wiley & Sons, Chichester, UK, 1996. I am grateful to Professor Robin Harris (University of Durham, UK) who provided much of the NMR data, which are copyright 1996 IUPAC, adapted from his contribution contained within this reference.
  2. J. Mason in Multinuclear NMR, Plenum Press, New York, USA, 1987. Where given, data for certain radioactive nuclei are from this reference.
  3. P. Pyykkö, Mol. Phys., 2008, 106, 1965-1974.
  4. P. Pyykkö, Mol. Phys., 2001, 99, 1617-1629.
  5. P. Pyykkö, Z. Naturforsch., 1992, 47a, 189. I am grateful to Professor Pekka Pyykkö (University of Helsinki, Finland) who provided the nuclear quadrupole moment data in this and the following two references.
  6. D.R. Lide, (ed.), CRC Handbook of Chemistry and Physics 1999-2000 : A Ready-Reference Book of Chemical and Physical Data (CRC Handbook of Chemistry and Physics, CRC Press, Boca Raton, Florida, USA, 79th edition, 1998.
  7. P. Pyykkö, personal communication, 1998, 204, 2008, 2010.
  8. The isotopic abundances are extracted from the naturally occurring isotopes section within WebElements.

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promethium atomic number