Use a periodic table to determine what decays are most likely to occur for the following isotopes

a) K-41b)Th-232 c) Br-84 d) Rn-222 e) Ac-231

2. Write an appropriate equation for each isotope in question 1 showing what is available before, what particle is emitted, and what nucleus is left afterwards.

 
3. For each of the following parts of a nuclear reactor, state the purpose, and tell what material is used in a boiling water reactor (BWR). Give an alternate material that might be used in another reactor design or in an emergency.
a) Coolant b) Moderator c) Control Rods d) Fuel

 
4. For each of the 3 major nuclear accidents, list
a) The precipitating event
b)The mode of failure (what part of the reactor quit working – see previous question)
c)Changes to nuclear design, operation, or political policy because the event occurred.

5. Explain the most serious threat to human safety associated with stable, long-term operation of nuclear reactors.
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