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Question
The half-life of a certain radioactive element is 3.465 days. Find its disintegration constant.
Solution
TH = 3.465 days, λ = ?
We know that
λ = `0.693/"T"_"H"`
λ = `0.693/( 3.465 xx 24 xx 60 xx 60)` S-1
λ = 2.31 x 10-6 s-1
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