Define what is the half-life of the decay scheme

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A radioactive element undergoes a one-stage decay process. Two concentration measurements, 1 year apart, are made on a sample of this radioactive element. In the later measurement, it is found that 0.07% of the parent atoms present at the time of the first measurement have decayed. Define what is the half-life of the decay scheme?

Reference no: EM13662103

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