Nuclide

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A nuclide is a type of atom characterized by its proton number, neutron number and its energy condition. 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 'radionuclides').

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