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3 ruthuerfords of a radio active isotope...

`3` ruthuerfords of a radio active isotope of half-life equal to `3` days was received after `12` days. Initial isotope packed was

A

48 rutherfords

B

12 rutherfords

C

25 rutherfords

D

36 rutherfords

Text Solution

Verified by Experts

The correct Answer is:
A
`W = (W _(0))/(2 ^(n)) , n = (t)/(t _(1/2)) = (12)/(3) =4`
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