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9 January, 19:10

What percentage of radioactive substance remains after two half-lives

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  1. 9 January, 20:38
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    After 2 half-lives there will be 25% of the original isotope, and 75% of the decay product. After 3 half-lives there will be 12.5% of the original isotope, and 87.5% of the decay product. After 4 half-lives there will be 6.25% of the original isotope, and 93.75% of the decay product.
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