Physics, 23.04.2021 17:10 ukyflyfl

The half-life of plutonium-238 is 87.7 years. What percentage of the atoms in a sample of plutonium-238 will remain radioactive after 263.1 years?

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What percentage of the atoms in the same sample of plutonium-238 will have changed to a stable isotope after 263.1 years?

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The half-life of plutonium-238 is 87.7 years. What percentage of the atoms in a sample of plutoniu...