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Homework Help: Radioacitve decay series (3#) types of equilibrium

  1. May 27, 2008 #1
    1. The problem statement, all variables and given/known data
    question is that : radioactive decay series of the living ones and types of equlibrium involved in each

    3. The attempt at a solution

    i found some informations about recently living decay series that are following ;

    Uranium, radium, and thorium occur in three natural decay series, headed by uranium-238, thorium-232, and uranium-235, respectively. In nature, the radionuclides in these three series are approximately in a state of secular equilibrium, in which the activities of all radionuclides within each series are nearly equal.

    but i have to find the types of equilibrium and equations of rate and other relevant informations ..i willbe happy anyone who help me.. thanks in advance...
  2. jcsd
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