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The Element Antimony Has an Atomic Weight of 121

Question 133

Multiple Choice

The element antimony has an atomic weight of 121.757 amu and only two naturally-occurring isotopes.One isotope has an abundance of 57.3% and an isotopic mass of 120.904 amu.Based on these data,what is the mass of the other isotope?


A) 121.757 amu
B) 122.393 amu
C) 122.610 amu
D) 122.902 amu

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