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The decay constant for an alpha- decay o...

The decay constant for an `alpha-` decay of `Th^(232)` is `1.58xx10^(-10)s^(-1)`. How many `alpha-`decays occur from `1 g` sample in 365 days ?

A

`2.89 xx 10^(19)`

B

`1.298 xx 10^(19)`

C

`2.219 xx 10^(19)`

D

None of these

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The correct Answer is:
b
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