Multiple Choice
If a naturally occurring sample of an unidentified element is found to contain three isotopes (A, B, and C) and consists of 90.5% isotope A (mass number 20) , 0.3% isotope B (mass number 21) , and 9.2% isotope C (mass number 22) , the atomic weight of the element measured from the sample will be:
A) greater than 21 amu.
B) less than 21 amu.
C) equal to 21 amu.
D) unrelated to the amount of isotope B.
Correct Answer:
Verified
Correct Answer:
Verified
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