1. a) How many protons and neutrons does Re-186 have? b) List 2 other possible isotopes of it.
2. How do nuclei hold together? What are the 2 forces? What role do neutrons have in holding nuclei together?
3. Would the following isotopes be stable? H-1, Ta-150, In-115, O-15?
4. Calculate the binding energy of the following isotopes: a) N (14) Atomic mass=14.003074 b) Xe-131 Atomic Mass = 130.095069
5. Write the alpha decay of Th-232
6. Write the beta decay (electron) of B-12 and the beta decay (positron) of Pb-208
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