Just as there are atomic shell features, there are alsonuclear shell structures. Certain
Chapter 12, Problem 68(choose chapter or problem)
Just as there are atomic shell features, there are alsonuclear shell structures. Certain values of the numberof protons Z and neutrons N are called magic, becausecertain nuclides with these magic numbers aremore tightly bound and have enhanced abundances.These numbers are 2, 8, 20, 28, 50, 82, and 126. (a) Usethis fact to explain why 4He and 16O have peaks in thebinding energy curve of Figure 12.7. (b) Explain why208Pb is one of the heaviest stable nuclides. (c) Discussthe abundances of the calcium isotopes with respect totheir value of N. The German physicists Maria Goeppert-Mayerand J. Hans D. Jensen won the Nobel Prizein Physics in 1963 for their discoveries concerning thenuclear shell model
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