Chemistry, 26.10.2020 03:40, shawn451

If an element has 2 naturally occurring isotopes, one with a Mass Number of 10 amu and one with a mass number of 20 amu, explain why the atomic mass of the isotope may not be 15 amu (the average of the 2 numbers).

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If an element has 2 naturally occurring isotopes, one with a Mass Number of 10 amu and one with a ma...