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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.
- 21.1: Nuclear Structure and Stability
Nuclear Stability. A nucleus is stable if it cannot be...
- 21.1: Nuclear Structure and Stability
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.
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.
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
Nuclei with certain numbers of nucleons, known as magic numbers, are stable against nuclear decay. These numbers of protons or neutrons (2, 8, 20, 28, 50, 82, and 126) make complete shells in the nucleus. These are similar in concept to the stable electron shells observed for the noble gases.
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
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
