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AN experiment requires minimum beta acti...

AN experiment requires minimum beta activity produced at the rate of 346 beta particles per minute. The half- life period of `_(42)Mo^(99)` , which is a beta emitter , is 66.6 h . Find the minimum amount of `_(42)Mo^(99)` required to carry out the experiment in 6.909 h.

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The correct Answer is:
`5.2xx10^(-16)g`
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