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1 g of a radiactive substance disinteg...

1 g of a radiactive substance disintegrates at the rate of `3.7xx10^(10)` dps , the atomic mass of the substance is 22.6 , calculate its means life .

A

`7.2xx10^10` sec

B

`8xx10^10` sec

C

`9xx10^10` sec

D

`10^10` sec

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The correct Answer is:
A
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