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Question
The decay constant of radioactive substance is 4.33 x 10-4 per year. Calculate its half life period.
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Solution
Here, λ= 4.33 * 10−4 per year
t1/2 = `0.6931/lambda`
∴ t1/2 = `0.6931/lambda =0.6931/(4.33*10^-4)`
∴t1/2 = 1600.69 years or
t1/2 =0.16*104*365 days
∴t1/2 = 584000days
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