Question: An element has two isotopes, X and Y, with mass numbers of 52.0 and 53.0respectively. The relative atomic mass is 52.2. The percentage abundance of

An element has two isotopes, X and Y, with mass numbers of 52.0 and 53.0respectively. The relative atomic mass is 52.2. The percentage abundance of the two isotopes is Select one: a. X - 20% , Y - 80% b. X - 25% , Y - 75% c. X - 80%, Y - 20% d. X - 75% , Y - 25% e. X - 50% , Y - 50%

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