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The most stable nuclide is Ar-32.
The amount of protons and neutrons affects the stability of nuclear fusion. It is a problem if the nucleus has an odd number of protons and neutrons. In the case of 48K, Number of neutrons are 29 and number of protons are 19. Both are in odd numbers so it is the least stable. In the case of 79Br, Number of neutrons are 44 neutrons and number of protons are 35. The protons are in odd numbers and neutrons are in even numbers so it is less stable.
What do we know about the stability of a nuclide?
Unlike radionuclides, stable nuclides do not spontaneously decay into radioactive elements since they are not radioactive. These nuclides are typically referred to as stable isotopes when they are discussed in respect to certain elements.
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The most stable nuclide is Ar-32.
Stable nuclides are nuclides that are not radioactive and so (unlike radionuclides) do not spontaneously undergo radioactive decay. When such nuclides are referred to in relation to specific elements, they are usually termed stable isotopes.
How do you know if a nuclide is stable?
Unstable or Stable
Calculate the total number of nucleons (protons and neutrons) in the nuclide. If the number of nucleons is even, there is a good chance it is stable.
What is a stable nucleus?
Stable nuclei generally have even numbers of both protons and neutrons and a neutron-to-proton ratio of at least 1. Nuclei that contain magic numbers of protons and neutrons are often especially stable. Superheavy elements, with atomic numbers near 126, may even be stable enough to exist in nature.
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