Question

An investigator collects a sample of a radioactive isotope with an activity of 4.8×105 Bq B q . 48 hours hour s later, the activity is 1.5×105 Bq B q . You may want to review (Page) . For help with math skills, you may want to review:.

What is the half-life of the sample?

Answer 1

Activity of a radioactive substance is defined as rate of disintegration

Half life is defined as time interval in which mass of a radioactive substance or its atom reduces to half of its initial value.

T_{​​​​​​1/2} =0.693/decay constant

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