Solved

Rubidium Possesses Two Stable Forms and Has an Average Mass

Question 91

Multiple Choice

Rubidium possesses two stable forms and has an average mass of 85.5.85Rb has a mass of 84.9 and a percent abundance of 72.2%.What is the mass of the other form of Rb?


A) 86.1 u
B) 85.7 u
C) 88.3 u
D) 87.1 u
E) 89.4 u

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