Bismuth, 214Bi decays by alpha decay with a half-life of 19.7 minutes. What is its decay constant? Select one: a. 8.46 x 10-4 s-1. b. 5.85 s. c. 5.86 x 10-4 s-1. d. 5.68 x 10-4 m-1.

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Bismuth, 214Bi decays by alpha decay with a half-life of 19.7 minutes.

What is its decay constant?

Select one:
a. 8.46 x 10-4 s-1.
b. 5.85 s.
c. 5.86 x 10-4 s-1.
d. 5.68 x 10-4 m-1.
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