โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Aluminium
  • ๐Ÿ‡บ๐Ÿ‡ฆ ะะปัŽะผั–ะฝั–ะน
  • ๐Ÿ‡จ๐Ÿ‡ณ ้‹
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Aluminium
  • ๐Ÿ‡ซ๐Ÿ‡ท Aluminium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Aluminium
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืืœื•ืžื™ื ื™ื•ื
  • ๐Ÿ‡ฎ๐Ÿ‡น Alluminio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใ‚ขใƒซใƒŸใƒ‹ใ‚ฆใƒ 
  • ๐Ÿ‡ต๐Ÿ‡น Alumínio
  • ๐Ÿ‡ช๐Ÿ‡ธ Aluminio
  • ๐Ÿ‡ธ๐Ÿ‡ช Aluminium
  • ๐Ÿ‡ท๐Ÿ‡บ ะะปัŽะผะธะฝะธะน

Aluminium - 13Al: isotope data

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 aluminium are listed (including any which occur naturally) below.
Isotope Mass / Da Natural abundance (atom %) Nuclear spin (I) Magnetic moment (μ/μN)
27Al 26.9815386 (8) 100 5/2 3.641504
Isotope abundances of aluminium
Isotope abundances of aluminium. In the above, 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 totals 100% for all the naturally occurring isotopes.

Radiosotope data

Further data for naturally occuring isotopes of aluminium are listed above. This table gives information about some radiosotopes of aluminium, their masses, their half-lives, their modes of decay, their nuclear spins, and their nuclear magnetic moments.
Isotope Mass / Da Half-life Mode of decay Nuclear spin Nuclear magnetic moment
24Al 23.999941 2.07 s EC + α to 20Ne; EC to 24Mg 4 3.646
25Al 24.990429 7.17 s EC to 25Mg 5/2
26Al 25.986892 710000 y EC to 26Mg 5
28Al 27.981910 2.25 m β- to 28Si 3 3.24
29Al 28.980446 6.5 m β- to 29Si 5/2
30Al 29.98296 3.68 s β- to 30Si 3

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 aluminium

Common reference compound: Al(NO3)3/D2O, 1.1 mol kg-1.

Table of NMR-active nucleus propeties of aluminium
  Isotope 1 Isotope 2 Isotope 3
Isotope 27Al
Natural abundance /% 100
Spin (I) 5/2
Frequency relative to 1H = 100 (MHz) 26.056859
Receptivity, DP, relative to 1H = 1.00 0.207
Receptivity, DC, relative to 13C = 1.00 1220
Magnetogyric ratio, γ (107 rad T‑1 s-1) 6.9762715
Magnetic moment, μ (μN) 4.3086865
Nuclear quadrupole moment, Q/millibarn 146.6(10)
Line width factor, 1056 l (m4) 69

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.