21. Nuclear Chemistry
Rate of Radioactive Decay
Multiple Choice
Multiple ChoiceFor the radioactive decay of lead-202 the decay constant is 1.32 x 10-5 yr-1. How long will it take in hours to decrease to 53% of its initial amount?
A
5.72 x 104 hrs
B
5.01 x 109 hrs
C
4.81 x 104 hrs
D
4.21 x 108 hrs
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