Isotopes of silver

The two isotopes of Silver, Ag-107 and Ag-109 are used and have been proposed as precursor for the production of a number of radioisopes. Ag-107 has been proposed for the (cyclotron) production of Pd-103, although the most common route for Pd-103 is via Rh-103 or Pd-104. Ag-109 is used for the production of Ag-110m which is used as a gamma reference source. Ag-109 can also be used for the production of In-110 (a replacement for the more commonly used In-111) and for the production of Cd-109, an 88 keV gamma reference source. Silver isotopes can be obtained from Trace Sciences International.

Naturally occurring isotopes

107Ag
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 silver are listed (including any which occur naturally) below.
Isotope Atomic mass (ma/u) Natural abundance (atom %) Nuclear spin (I) Magnetic moment (μ/μN)
106.905092 (6) 51.839 (7) 1/2 -0.113570
109Ag 108.904756 (4) 48.161 (7) 1/2 -0.1306905

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

Radiosotope data

d>-0.146
Further data for naturally occuring isotopes of silver are listed above. This table gives information about some radiosotopes of silver, their masses, their modes of decay, their nuclear spins, and their nuclear magnetic moments.
Isotope Mass Half-life Mode of decay Nuclear spin Nuclear magnetic moment
103Ag 102.90897 1.10 h EC to 103Pd 7/2 4.47
104Ag 103.90863 69 m EC to 104Pd 5 3.92
105Ag 104.90653 41.3 d EC to 105Pd 1/2 0.1014
106Ag 105.90667 8.4 d EC to 106Pd; β- to 106Cd 6 3.71
108Ag 107.905954 2.39 m EC to 108Pd; β- to 108Cd 1 2.6884
110Ag 109.906111 24.6 s EC to 110Pd; β- to 110Cd 1 2.7271
111Ag 110.905295 7.47 d β- to 111Cd 1/2
112Ag 111.90701 3.13 h β- to 112Cd 2 0.0547
113Ag 112.90657 5.3 h β- to 113Cd 1/2 0.159

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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 silver

Common reference compound: AgNO3/D2O.

Table of NMR-active nucleus propeties of silver
  Isotope 1 Isotope 2 Isotope 3
Isotope 107Ag 109Ag
Natural abundance /% 51.839 48.161
Spin (I) 1/2 1/2
Frequency relative to 1H = 100 (MHz) 4.047878 4.653601
Receptivity, DP, relative to 1H = 1.00 0.0000350 0.0000495
Receptivity, DC, relative to 13C = 1.00 0.200 0.282
Magnetogyric ratio, γ (107 rad T-1 s-1) -1.0889181 -1.2518634
Magnetic moment, μ (μN) -0.19689893 -0.22636279
Nuclear quadrupole moment, Q/millibarn 980(11) [Mössbauer state) -
Line width factor, 1056l (m4) - -

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 Hdbook 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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silver atomic number