Structure and Properties of the Nucleus

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Structure and Properties of the Nucleus
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Nucleons
Proton is the nucleus of the simplest atom,
hydrogen. It has positive charge (e) and mass
mp1.6726x10-27 kg. Neutron is electrically
neutral and has mass mn1.6749x10-27 kg
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Nuclei that contain the same number of protons
but different number of neutrons are called
isotopes.
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Nuclear Radii
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Atomic Mass Unit
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Binding Energy and Nuclear Forces
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The total mass of a stable nucleus is always less
than the sum of the masses of its constituent
protons and neutrons.
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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.
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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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Radioactivity
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Radioactivity is the result of the disintegration
or decay of instable element.
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Alpha Decay
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Transmutation
parent daughter
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Q-Value
The energy released is called the disintegration
energy, Q or Q-value
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Beta Decay
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Gamma Decay