An unknown element is found to have three naturally occurring isotopes with atomic masses of 35.9675 (0.337%) , 37.9627 (0.063%) , and 39.9624 (99.600%) . Which of the following is the unknown element?
A) Ar
B) K
C) Cl
D) Ca
E) None of the above could be the unknown element.
Correct Answer:
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