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For the nuclear reaction, .(Z)^(A)X to...

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?

A

`1.25xx10^(6)s^(-1)`

B

`2.5xx10^(6)s^(-1)`

C

`1.25xx10^(7)s^(-1)`

D

`5xx10^(7)s^(-1)`

Text Solution

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The correct Answer is:
B
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