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29 Ιουλ 2023 · All the stable nuclei lie within a definite area called the zone of stability. For low atomic numbers most stable nuclei have a neutron/proton ratio which is very close to 1. As the atomic number increases, the zone of stability corresponds to a gradually increasing neutron/proton ratio.
26 Σεπ 2024 · Nuclear Stability. A nucleus is stable if it cannot be transformed into another configuration without adding energy from the outside. Of the thousands of nuclides that exist, about 250 are stable. A plot of the number of neutrons versus the number of protons for stable nuclei reveals that the stable isotopes fall into a narrow band.
12 Ιουλ 2023 · Electrostatic repulsions between positively charged protons would normally cause the nuclei of atoms (except H) to fly apart. In stable atomic nuclei, these repulsions are overcome by the strong nuclear force, a short-range but powerful attractive interaction between nucleons.
A plot of the number of neutrons versus the number of protons for stable nuclei reveals that the stable isotopes fall into a narrow band. This region is known as the band of stability (also called the belt, zone, or valley of stability).
Describe nuclear structure in terms of protons, neutrons, and electrons; Calculate mass defect and binding energy for nuclei; Explain trends in the relative stability of nuclei
The nuclear stability curve depicts the binding energy per nucleon as a function of the mass number (A) of atomic nuclei. The curve shows that nuclei with intermediate mass numbers, around A = 56 for iron, have the highest binding energy per nucleon, indicating the greatest stability.
8 Δεκ 2021 · Nuclear stability means that the nucleus of an element is stable and thus it does not decay spontaneously emitting any kind of radioactivity. Among the ≈9000 nuclei expected to exist, and the ≈3000 presently known, only 195 are stable against spontaneous decay, because of energy conservation.
