During the nuclear explosion, one of the products is with half life of 6.93 years. If of was absorbed in the bones of a newly born baby in place of Ca, how much time, in years, is required to reduc

Question

During the nuclear explosion, one of the products is  with half life of 6.93 years. If  of  was absorbed in the bones of a newly born baby in place of Ca, how much time, in years, is required to reduce it by 90% if it is not lost metabolically .

Canvas Classes · Accepted Answer

For first order (radioactive decay):

For 90% reduction, 10% remains:

Answer: 23.03 years

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