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Nuclaer Physics
- Words:
- 1571
- Submitted:
- Wed Sep 02 2009
- Mark submitted by Author:
Have a little read: ... Nuclear Physics: Radioactive decay: * Regardless of any circumstances radiation does not change: temperature, sound, chemical conditions, etc. * These particles were good at ionizing electrons: "knocking off" electrons (charging) * Element notation: - A=mass number - Z= atomic number - X= individual element * No two elements are the same * Isotopes: same element with different mass... atomic number, different mass number * Unless otherwise specified, the element will be assumed to be electrically neutral, so there will be the same number of electrons as there are protons. * Protons and neutrons: nucleons * Nucleus stays together by strong nuclear force. Sometimes force is overcome and atom is unstable. Unstable isotopes: RADIOISOTOPES. This is because when there are more protons, lots of protons repel as the force does not hold all the protons together. * Different ionizing radiation: ?, ß and ? (alpha, beta and gamma) ? Radiation: * Most powerful. Approximately 5MeV <-- unit of energy: Mega Electron Volt. * Ionizes things
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