What fraction of a given sample of radioactive nuclide remains after four half lives??

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asked Nov 22, 2017 2.5k views

1 Answer

Onyi · Answer 1 · 2017-11-27T17:11:26+0000

After each half life, the amount is halved.
After n half lives, the remaining fraction is
1/(2ⁿ)
After four half lives:
1/2⁴
= 1/16 of the original amount

What fraction of a given sample of radioactive nuclide remains after four half lives??

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