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Iron-56 (56 Fe) is the most common isotope of iron. About 91.754% of all iron is iron-56. Of all nuclides, iron-56 has the lowest mass per nucleon. With 8.8 MeV binding energy per nucleon, iron-56 is one of the most tightly bound nuclei. [1] The high nuclear binding energy for 56 Fe represents the point where further
3 Iron-56. 4 Iron-57. 5 Iron-58. 6 Iron-60. 7 References. 8 Further reading. ... This can be done by dividing the surface mass density (Σ ej) by the atomic mass of ...
Iron's most common isotope has a mass number of 56, while the stable isotopes of iron vary in mass number from 54 to 58. Monoisotopic mass is typically expressed in daltons (Da), also called unified atomic mass units (u).
At carbon, the ratio of mass (in daltons) to mass number is defined as 1, and after carbon it becomes less than one until a minimum is reached at iron-56 (with only slightly higher values for iron-58 and nickel-62), then increases to positive values in the heavy isotopes, with increasing atomic number.
Iron is a chemical element; it has the symbol Fe (from Latin ferrum 'iron') and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's outer and inner core.
The nominal mass is not always the lowest mass number, for example iron has isotopes 54 Fe, 56 Fe, 57 Fe, and 58 Fe with abundances 6%, 92%, 2%, and 0.3%, respectively, and a nominal mass of 56 Da. For a molecule, the nominal mass is obtained by summing the nominal masses of the constituent elements, for example water has two hydrogen atoms ...
For very small atomic mass number (H, He, Li), binding energy per nucleon is small, and this energy increases rapidly with atomic mass number. Nickel-62 (28 protons, 34 neutrons) has the highest mean binding energy of all nuclides, while iron-58 (26 protons, 32 neutrons) and iron-56 (26 protons, 30 neutrons) are a close second and third. [13]
Nickel-62 is an isotope of nickel having 28 protons and 34 neutrons.. It is a stable isotope, with the highest binding energy per nucleon of any known nuclide (8.7945 MeV). [1] [2] It is often stated that 56 Fe is the "most stable nucleus", but only because 56 Fe has the lowest mass per nucleon (not binding energy per nucleon) of all nuclides.