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The half - life of ^(215) At is 100 mu ,...

The half - life of `^(215) At` is `100 mu , s.`The time taken for the radioactivity of a sample of `^(215) At` to decay to `1//16^(th)` of its initially value is

A

` 400 mu s`

B

`6.3 mu s`

C

`40 mu s`

D

`300 mu s`

Text Solution

Verified by Experts

The correct Answer is:
A
`A=A_(0) (1//2)^(n),n` =number of half-lives.
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