An atom of a specific isotope, characterized by its atomic number, mass number, and its energy state. Conditions with a life of less than 10-10s are called excited conditions of a nuclide. At present, more than 2,770 different nuclides are known, distributed over the 113 currently known elements. More than 2,510 nuclides of these are radioactive (see radionuclide).
Related category• ATOMIC AND NUCLEAR PHYSICS
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