The half-life of radioactive iodine-137 is 8.0 days.How many iodine nuclei are necessary to produce an activity of 1.0 μCi? (1 Ci = 3.70 × 1010 Bq)
A) 2.9 × 109
B) 4.6 × 109
C) 3.7 × 1010
D) 7.6 × 1012
Correct Answer:
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