A radioactive isotope has a decay constant of 10-6s-1. Calculate its half - life?
5.93 x 106s
6.93 x 105s
6.93 x 109s
5.93 x 107s
Correct answer is B
t1/2 = \(\frac{0.693}{\gamma}\) = \(\frac{0.693}{10^-6}\) = 6.93 x 105
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