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29 October, 08:42

Indium has two naturally occurring isotopes and a weighted average atomic mass of 114.82 amu. one of the isotopes has a mass of 112.9043 amu. which is likely to be the second isotope: 111in, 112in, 114in, or 115 in

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  1. 29 October, 09:04
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    115 in is likely to be the second isotope

    Reason is that if one isotope has a mass of 112.9043 amu then the other isotope which less than 114.82 amu the other isotope must be greater than 114.82 amu. therefore 115 in atomic mass is the other isotope since it is greater than 114.82 the average mass making it is more abundance.
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