A freshly prepared sample of a radioisotope of half-life 1386 s has activity disintegrations per second. Given that find the fraction of the initial number of nuclei (expressed in nearest, integer percentage) that will decay in the first 80s after preparation of the sample
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A freshly prepared sample of a radioisotope of half - life 1386s has activity 103 disintegrations per second Given that ln2=0.693 the fraction of the initial number of nuclei (expressed in nearest integer percentage ) that will decay in the first 80s after preparation of the sample is. Hence% decay ≈40%.
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