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Co^(60) has half-life of 5.3 years. Find...

`Co^(60)` has half-life of `5.3` years. Find the number of half-lives for `7//8` of the orignal sample to disintergrate.

Text Solution

Verified by Experts

The correct Answer is:
`3`
We know `N = N_(0) ((1)/(2))^(n)`
Given that `N = (N_(0))/(8), :' (7)/(8)` part disintergrates
no. of half-lives `(1)/(8) = 1 xx ((1)/(2))^(n)`
`n = 3`
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