1. Relative Stability of Different Nuclei
Nuclear Stability
Relative Stability of Different Nuclei

3. Two Methods
Which isotopes?
Binding Energy

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

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

7. Isotope trends among the elements:

8. 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

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

12. Split up class and do:

13. Do all isotopes using Excel
Isotopedata_stable.xls

14. Modes of Radioactive Decay

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

17. Decay modes and
the island of stability.