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One of the hazards of nuclear explosion ...

One of the hazards of nuclear explosion is the generation of `Sr^90` and its subsequent incorporation in bones. This nuclide has a half life of `28.1` year. Suppose one microgram was absorbed by a new born child, how much `Sr^90` will remain in his bones after `20` years.

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To solve the problem of how much strontium-90 (Sr-90) will remain in the bones of a newborn child after 20 years, we can follow these steps: ### Step 1: Understand the half-life and decay constant The half-life (t₁/₂) of Sr-90 is given as 28.1 years. The decay constant (λ) can be calculated using the formula: \[ \lambda = \frac{0.693}{t_{1/2}} \] Substituting the half-life into the equation: ...
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