For the nuclear reaction, ._(Z)^(A)X to ._(Z-4)^(A-8)Y,"" t_(1//2=160 – InterviewSolution

1.	For the nuclear reaction, ._(Z)^(A)X to ._(Z-4)^(A-8)Y,"" t_(1//2=1600yrs. If initial activity was 10^(7) dps, how many alpha-"particles" will be emitted per second after 4800yrs?
Answer» `1.25xx10^(6)s^(-1)` `2.5xx10^(6)s^(-1)` `1.25xx10^(7)s^(-1)` `5xx10^(7)s^(-1)` ANSWER :B

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