Chemistry, 17.10.2020 08:01, chaycebell74021
Question 2/5 Rubidium is a soft, silvory. white metal that has two common isotopes, Rb-85 and Rb-87. If the abundance of
Rb-85 is 80.2% and the abundance of Rb-87 is 19.8%, what is the average atomic mass of rubidium?
A. 85.396 amu
B. 86.132 amu
C. 85.590 amu
D. 86.245 amu
Answers: 2
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Question 2/5 Rubidium is a soft, silvory. white metal that has two common isotopes, Rb-85 and Rb-87....
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