One gram of a radioactive substance dis...

One gram of a radioactive substance disintegrates at the rate of `3.7 xx10^(10)` disintegrations per second. The atomic mass of the subsatnce is `226`. Calculate its mean life.

`1.2xx10^(5)s`

`1.39xx10^(11)s`

`2.1xx10^(5)s`

`7.194xx10^(10)s`

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The correct Answer is:

`(N)/(N_(0))=(1)/(2^(n))`

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