Chemistry, 01.10.2021 19:10 27lcasselberry

Le – 19 has an atomic mass of 19.0134 u, Le – 17 has an atomic mass of 17.4629 u, and Le – 15 has an atomic mass of 15.7384 u. Use the natural abundance and atomic mass of each isotope to determine the average atomic mass of Le .

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Le – 19 has an atomic mass of 19.0134 u, Le – 17 has an atomic mass of 17.4629 u, and Le – 15 has an...

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