The half-life period of radon is 3.8 day...

The half-life period of radon is 3.8 days. After how many will only one-twentieth of radon sample be left over?

`3.8` day

`16.5` day

`33` day

`76` day

Text Solution

Verified by Experts

The correct Answer is:

`(b)`

`t = (2.303xx3.8)/(0.693) log ((1)/(1//20))`
`= (2.303xx3.8xx1.3010)/(0.693) = 16.42` day

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