Silver possesses two stable isotopes: ¹⁰⁷Ag (106.90 u)and ¹⁰⁹Ag (108.90 u).If the average atomic mass of Ag is 107.87 u,what is the percent abundance of ¹⁰⁷Ag? A)48.5% B)50.0% C)51.5% D)46.3% E)53.8%

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Quizplus · Accepted Answer

The average atomic mass of Ag (107.87 u) can be used to calculate the percent abundance of each isotope using the formula: $ \text{average atomic mass} = (x)(\text{mass of isotope 1}) + (1-x)(\text{mass of isotope 2}) $, where $ x $ is the fractional abundance of isotope 1. Solving for $ x $ gives the percent abundance of $ ^{107}Ag $ as 51.5%.

Silver Possesses Two Stable Isotopes: 107Ag (106

Silver Possesses Two Stable Isotopes: ¹⁰⁷Ag (106