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Rubidium has two naturally occurring isotopes:

85Rb (atomic mass = 84.9118 amu) and

87Rb (atomic mass = 86.9092 amu).

The percent abundance of 87Rb can be estimated to be which of the following?

A. 0%

B. 25%

C. 50%

D. 75%

 

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Christian Garcia
Christian GarciaLv10
5 Nov 2020
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