Courants Universels et Isotopes
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Courants universels et Isotopes.
La decouvertes des isotopes
- 1910 Frederick Soddy establishes the existence of nuclides with the same number of protons but different number of neutrons.
- 1913 Frederick Soddy propose le mot isotope dans son papier [92 du 4 decemebre 1913, page 399-400]
- http://dbhs.wvusd.k12.ca.us/webdocs/Chem-History/Fajans-Isotope.html
- http://web.lemoyne.edu/~GIUNTA/richards.html
- http://web.lemoyne.edu/~GIUNTA/soddy.htmlItrodction du mot Isotope
- http://web.lemoyne.edu/~GIUNTA/urey.html Isotope Hydrogen
1927 stable isotope
- 1940 500 isotopes http://ie.lbl.gov/systematics/isodiscovery.pdf
Isotopes metalliques stables
| fer | 54 | 5.81 |
| fer | 56 | 91.72 |
| fer | 57 | 2,21 |
| fer | 58 | 0.281 |
| Zn | 64 | 48.63 |
| Zn | 66 | 27.92 |
| Zn | 68 | 18.84 |
| Cu | 63 | 69.17 |
| Cu | 65 | 30.83 |
| Ag | 107 | 51.84 |
| Ag | 109 | 48.16 |
