Multiple Choice
The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is __________ amu. 
A) 219.7
B) 220.4
C) 220.42
D) 218.5
E) 221.0
Correct Answer:
Verified
Correct Answer:
Verified
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