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During nuclear explosion, one of the pro...

During nuclear explosion, one of the products is `.^(99)Sr` with half`-` life of `28.1 `years. If `1 mug` of `.^(90)Sr` was absorbed in the bones of a newly born baby instead of calcium, how much of its will remain after 10 years and 60 years if it is not lost metabolically.

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(23.03)
`t_(1//2)=6.93` years
`t=(2.303)/(k) log""(100)/(10) rArr k =(0.693)/(6.93) =0.1 rArr t=(2.303)/(1) xx1 =23.03` years
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