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The decay constant of Ra^(226) is 1.37xx...

The decay constant of `Ra^(226)` is `1.37xx10^(-11)s^(-1)`. A sample of `Ra^(226)` having an activity of `1.5` millicurie will contain

A

`4.05 times 10^18`

B

`3.7 times 10^17`

C

`2.05 times 10^15`

D

`4.7 times 10^10`

Text Solution

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The correct Answer is:
A
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