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The solid that is formed and usually sinks to the bottom of a solution is the
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Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material
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the half life of radium is 1590 years. how many years will it take for 20 grams of radium to decay t...
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