Part A Enter a balanced nuclear equation for the production of lutetium-177, used in the treatment of some cancers, from the beta decay of ytterbium-177. Express your answer as a nuclear equation.

Write a balanced equation for each of the following nuclear reactions: (a) bismuth-212 decays into polonium-212. (b) beryllium-8 and a positron are produced by the decay of an unstable nucleus. (c) neptunium-239 forms from the reaction of uranium-238 with a neutron and then spontaneously converts into plutonium-239. (d) strontium-90 decays into yttrium-90