Isotopes of silver

Isotope data
silver symbol icon

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 radioisotopes. 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

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)
107Ag 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 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 silver are listed above. This table gives information about some radiosotopes of silver, 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
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 -0.146
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

Sheffield ChemPuter isotope pattern calculator

You can use WebElements to calculate an isotope pattern for an arbitrary chemical formula:

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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. 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]
  3. For further information about radioisotopes see Jonghwa Chang's (Korea Atomic Energy Research Institute) Table of the Nuclides

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silver atomic number