{"id":24021,"date":"2019-06-09T13:56:12","date_gmt":"2019-06-09T13:56:12","guid":{"rendered":"http:\/\/sitepourvtc.com\/?page_id=24021"},"modified":"2023-06-09T07:06:38","modified_gmt":"2023-06-09T07:06:38","slug":"isomers","status":"publish","type":"page","link":"https:\/\/sitepourvtc.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/atom-properties-of-atoms\/nuclides\/isomers\/","title":{"rendered":"Isomer – Nuclear Isomers"},"content":{"rendered":"
In nuclear physics and nuclear chemistry, the various species of atoms whose nuclei contain particular numbers of protons and neutrons are called nuclides<\/strong>. Nuclides are also characterized by their nuclear energy states (e.g., metastable nuclide 242m<\/sup>Am). Each nuclide is denoted by the chemical symbol of the element (this specifies Z) with the atomic mass number as a superscript. Hydrogen (H), for example, consists of one electron and one proton. The number of neutrons <\/strong><\/a>in a nucleus is known as the neutron number <\/strong>and is given the symbol N<\/strong>. The total number of nucleons, protons, and neutrons in a nucleus are equal to Z + N = A<\/strong>, where A is called the atomic mass number<\/strong>.<\/p>\n Isomers<\/strong> are nuclides with equal proton number and equal mass number (thus making them by definition the same isotope) but different energy states. We usually indicate isomers<\/strong> with a superscript m, thus: 241m<\/sup>Am or 110m<\/sup>Ag.<\/p>\n