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Structure and Properties of the Nucleus

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Presentation on theme: "Structure and Properties of the Nucleus"— Presentation transcript:

1 Structure and Properties of the Nucleus

2 Nucleons Proton is the nucleus of the simplest atom, hydrogen. It has positive charge (+e) and mass mp=1.6726x10-27 kg. Neutron is electrically neutral and has mass mn=1.6749x10-27 kg

3 Nuclei that contain the same number of protons but different number of neutrons are called isotopes.

4 Nuclear Radii

5 Atomic Mass Unit

6 Binding Energy and Nuclear Forces

7 The total mass of a stable nucleus is always less than the sum of the masses of its constituent protons and neutrons.

8 The total energy represents the amount of energy that must be put into a nucleus in order to break it apart into its constituent protons and neutrons.

9 To be stable, the mass of nucleus must be less than that of constituent nucleons, so that energy input is needed to break it apart.

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11 Radioactivity

12 Radioactivity is the result of the disintegration or decay of instable element.

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14 Alpha Decay

15 Transmutation parent daughter

16 Q-Value The energy released is called the disintegration energy, Q or Q-value:

17 Beta Decay

18 Gamma Decay


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