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

User Nicktruesdale
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1 Answer

1 vote
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
User Onyi
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