| 21. | His thesis was " The Radioactive Decay of Hafnium and Thulium Isotopes ".
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| 22. | Their radioactive decay is accompanied by the emission of single protons.
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| 23. | Elements such as lead formed largely through the radioactive decay of heavier elements.
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| 24. | :For practical purposes, decay rates for spontaneous radioactive decay are constant.
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| 25. | Another danger of actinium is that it undergoes radioactive decay faster than being excreted.
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| 26. | Heat generated by the natural radioactive decay of the plutonium is converted into electricity.
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| 27. | Most helium on Earth is a result of radioactive decay.
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| 28. | These superheavy elements may have a nucleus that is relatively stable against radioactive decay.
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| 29. | A typical simple example is the linear differential equation used to model radioactive decay.
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| 30. | Leptons also undergo radioactive decay, meaning that they are subject to the weak interaction.
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