Isotopes of tin

Isotope data
tin symbol icon

Tin has the most stable isotopes (10) of all elements. Tin isotopes are used in a variety of applications. Sn-112 is used as precursor in the production of the radioisotope Sn-113 while Sn124 is used for producing Sb-124. Sn-116 and Sn-117 can both be used for the production of the medical radioisotope Sn-117m which is used in treating bone cancer. Both Sn-118 and Sn-119 have been evaluated for the production of Sn-119m. Tin 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 tin are listed (including any which occur naturally) below.
Isotope Atomic mass (ma/u) Natural abundance (atom %) Nuclear spin (I) Magnetic moment (μ/μN)
112Sn 111.904826 (5) 0.97 (1) 0
114Sn 113.902784 (4) 0.66 (1) 0
115Sn 114.903348 (3) 0.34 (1) 1/2 -0.91884
116Sn 115.901747 (3) 14.54 (9) 0
117Sn 116.902956 (3) 7.68 (7) 1/2 -1.00105
118Sn 117.901609 (3) 24.22 (9) 0
119Sn 118.903311 (3) 8.59 (4) 1/2 -1.04729
120Sn 119.9021991 (29) 32.58 (9) 0
122Sn 121.9034404 (30) 4.63 (3) 0
124Sn 123.9052743 (17) 5.79 (5) 0

Isotopic abundances of Sn
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 tin are listed above. This table gives information about some radiosotopes of tin, 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
110Sn 109.90785 4.1 h EC to 110In 0
111Sn 110.90774 35 m EC to 111In 7/2 0.61
113Sn 112.905174 115.1 d EC to 113In 1/2 -0.879
121Sn 120.904239 1.128 d β- to 121Sb 3/2 0.698
123Sn 122.905723 129.2 d β- to 123Sb 11/2 -1.370
125Sn 124.907785 9.63 d β- to 125Sb 11/2 -1.35
126Sn 125.90765 100000 y β- to 126Sb 0
127Sn 126.91035 2.12 h β- to 127Sb 11/2

Sheffield ChemPuter isotope pattern calculator

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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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tin atomic number