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Nuclear Stability

Nuclear Stability. Relative Stability of Different Nuclei. Two Methods. Which isotopes?. Binding Energy. What holds an atom together?. Forces of Nature and Atomic Structure:. Band (Island) of Stability. N/Z ratio. Number of stable isotopes. Isotope trends among the elements:.

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Nuclear Stability

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  1. Nuclear Stability Relative Stability of Different Nuclei

  2. Two Methods • Which isotopes? • Binding Energy

  3. What holds an atom together? Forces of Nature and Atomic Structure:

  4. Band (Island) of Stability N/Z ratio Number of stable isotopes

  5. Isotope trends among the elements:

  6. Binding Energy, but first… Comparing stability: O-O single bond strength = 146 kJ/mol O=O double bond strength = 496 kJ/mol Which is more stable, O2 or O3? O2: O=O O3: O=O-O

  7. Binding Energy: How we measure nuclear stability

  8. Predict what you think the trend will be: As atomic number increases, what will happen to stability?

  9. Split up class and do:

  10. Do all isotopes using Excel Isotopedata_stable.xls

  11. Modes of Radioactive Decay

  12. U-238 Decay Series And … the problem with radon.

  13. Decay modes and the island of stability.

  14. Cool stuff about nuclear chemistry

  15. Where is all the Helium From?

  16. Uranium-Based Reactors

  17. Enrichment: Diffusion Method; 1.007 per cycle Centrifuge Method; 1.3 per cycle

  18. Breeder Reactors: Good and Bad 238U + n  239U + B- 239U  239Np + B- 239Np  239Pu + B- 239Pu is fissile and can be used as nuclear fuel.

  19. Nuclear Proliferation Issues: The problem with U Enrichment The problem of Pu materials

  20. Radon in the Home

  21. Smoke Detectors in the Home

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