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A U^(238) preparation of mass 1.0g emits 1.24.10^(4) alpha particles per second. Find the life of this nuclide and the activity of the preparatio. |
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Answer» SOLUTION :Here `N_(0)=(1)/(238)xx6.023xx10^(23)` `= 2.531xx10^(21)` The activity is `A= 1.24xx10^(4) dis//sec` ltbr4gt Then `lambda=(A)/(N_(0))= 4.90xx10^(-18) per sec`. Hence the HALF life is `T_(1/2)=(In2)/(lambda)= 4.49xx10^(9) YEARS` |
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