Indium

Isotopes of indium

Indium has two stable isopes and one of them, In-113, is used for the production of radioisotopes. In-113 is used for the production of Sn-113 and can also be used for the production of the medical radioisotope In-110, although the most common production route for that radioisotope is via Cd-110. Indium isotopes can be obtained from Trace Sciences International.

Naturally occurring isotopes

th>Natural abundance (atom %)

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 indium are listed (including any which occur naturally) below.

Isotope	Atomic mass (ma/u)	Nuclear spin (I)	Magnetic moment (μ/μN)
113In	112.904061 (4)	4.29 (5)	9/2	5.5289
115In	114.903882 (4)	95.71 (5)	9/2	5.5408

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 indium are listed above. This table gives information about some radiosotopes of indium, 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 spinNuclear magnetic moment
109In	108.90715	4.2 h	EC to 109Cd	9/2	5.54
110In	109.90717	1.15 h	EC to 110Cd	2	4.37
111In	110.90511	2.8049 d	EC to 111Cd	9/2	5.50
112In	111.90553	14.4 m	EC to 112Cd; β- to 112Sn	1	2.82
114In	114.904918	1.198 m	EC to 114Cd; β- to 114Sn	1	2.82
115In	116.903879	4.4 x 1014 y	β- to 115Sn	9/2sub>	5.541

Sheffield ChemPuter isotope pattern calculator

References

1. Naturally occurring isotope abundances: Commission on Atomic Weights and Isotopic Abundances reportor 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 omic Energy Research Institute) Table of the Nuclides

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Indium	Indium
Indium	Indium
Indio	Indio
Indium	Índio