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Strontium-90 Is a Byproduct in Nuclear Reactors Fuelled by the Radioisotope

Question 107

Multiple Choice

Strontium-90 is a byproduct in nuclear reactors fuelled by the radioisotope uranium-235. The half-life of strontium-90 is 28.8 y. What percentage of a strontium-90 sample remains after 75.0 y.?


A) 68.1
B) 16.4
C) 7.40
D) 38.4
E) 2.60

Correct Answer:

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