Question

Plutonium decays with a half-life of 24000 years.
If plutonium is stored for 72,000 years, then the
fraction of plutonium that remains is
(a) 1/2 (b) 1/4
(c) 1/3 (d) 1/8

Answer 1

Answer:

D

in one half life the fraction of the plutonium that remains is 1/2

in three half lives the fraction that remains is 1/(2^3)

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