Multiple Choice
If pure polonium-210 (k = 5.02 × 10-3 day-1) were used in a crime, based on radioactive disintegration alone, how long would it take for half the original isotope to disappear?
A) 1.44 × 103 minutes
B) 69.3 hours
C) 138 days
D) 2.9 years
E) 210 years
Correct Answer:
Verified
Correct Answer:
Verified
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