Je was op zoek naar: protons (Engels - Tajik)

isobars are nuclides having the same mass number, i. e. sum of protons plus neutrons.
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the small, positively-charged center of an atom, in which protons and neutrons are found.
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rays consisting of alpha particles, consisting of two protons and two neutrons that are emitted from the atoms of certain radioactive elements.
Интихоби ранги элементҳои радиоактивӣ

matter that cannot be broken down into simpler matter. chemical elements are cornerstones of materials. elements consist of atoms that consist of a nucleus of positive protons, neutral neutrons, and a shell of electrons.
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a nuclear isomer is a metastable or isomeric state of an atom caused by the excitation of a proton or neutron in its nucleus so that it requires a change in spin before it can release its extra energy. they decay to lower energy states of the nuclide through two isomeric transitions: [br] - > & #947; - emission (emission of a high-energy photon)[br] - > internal conversion (the energy is used to ionize the atom)[br] contrast this with the definition of a chemical isomer, the more common use of the word. also contrast with the meaning of isotope, in which the difference is the number of neutrons in the nucleus. metastable isomers of a particular atom are usually designated with an "m" (or, in the case of atoms with more than one isomer, 2m, 3m, and so on). this designation is usually placed after the atomic symbol and number of the atom (e. g., co-58m), but is sometimes placed as a superscript before (e. g., [sup]m[/ sup]co-58 or [sup]58m[/ sup]co).
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