The Element X Has Three Naturally Occurring Isotopes

question 57

Multiple Choice

The element X has three naturally occurring isotopes. The isotopic masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is __________ amu.

• A)33.33
• B)55.74
• C)56.11
• D)57.23
• E)56.29

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