Multiple Choice
The average atomic mass of Eu is 151.96 amu.There are only two naturally occurring isotopes of europium,151Eu with a mass of 151.0 amu and 153Eu with a mass of 153.0 amu.The natural abundance of the 131Eu isotope must be approximately
A) 60%.
B) 20%.
C) 50%.
D) 80%.
E) 40%.
Correct Answer:
Verified
Correct Answer:
Verified
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