The ratio of the number of atoms of two radioactive elements A and B, – InterviewSolution

1.	The ratio of the number of atoms of two radioactive elements A and B, in equilibrium with each other, is 3.1 xx 10^(9): 1. If t_((1)/(2)) of element B is 6.45 yrs, calculate that of element A.
Answer» SOLUTION :`2 XX 10^(10)`

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