Please answer each part of the question for full points Uranium and thorium are
ID: 2103373 • Letter: P
Question
Please answer each part of the question for full points
Uranium and thorium are the radioactive elements found in some abundance in the Earth's crust. As each isotope of these elements decays, new radioactive elements are created that have much shorter half-lives than uranium or thorium. A series of alpha and beta decays occurs that leads to a stable isotope of lead (Pb). One such series begins with the isotope thorium-232 and proceeds through the following chain of events: Th232 Ra Ac Th Ra Rn Po Pb Bi Po Pb Using the periodic table, find the atomic numbers for all of these elements. Identify and indicate which of the reactions in this series involve alpha decay and which involve beta decay. (The change in atomic number provides all the information you need.) Write the reaction equations for the first three decays in this series. An example of a reaction equation is 82Pb214 83Bi214 + -1e 0 + 0 nu 0. (Putting that "-1" in the subscript of the electron -ie 0 is discussed on page 413 in the textbook. It is a useful way of keeping track of how many positive charges are present at the beginning (82) and at the end (82 = 83-1) of the reaction, before the electron that was produced by the decay of the neutron flies out of the nucleus to New Jersey.) Fill in the mass numbers for all of the isotopes in this series. (The mass number is simply the total number of nucleons, for example, the mass number is 232 for the starting isotope of thorium.) Note that some of the same elements appear twice during the chain of decay. Pretty weird, no?Explanation / Answer
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