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Question 17

During nuclear explosion, one of the products is 90Sr with half-life of 28.1 years. If 1μg of 90Sr was absorbed in the bones of a newly born baby instead of calcium, how much of it will remain after 10 years and 60 years if it is not lost metabolically.


Therefore, 0.7814 μg of 90Sr will remain after 10 years.


Therefore, 0.2278 μg of 90Sr will remain after 60 Years

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