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  • Is iron the most stable element in the periodic table?
    $\begingroup$ Nickel-62, Iron-58 and Iron-56 are the most tightly bound nuclei, but Iron-56 is the most stable nucleus The stability of Iron-56 results from the fact that an Iron-56 nucleus has a diameter about equal to the range of the nuclear force
  • Why is Iron the most stable element? - Physics Stack Exchange
    To answer "why" the element with 26 protons and 30 neutrons is stable (or the one with 26 protons and 32 neutrons) and has close to the maximum binding energy, one needs a specific quantum mechanical model for the collective potential of the above factors Shell models are fairly successful in classifying the periodic table
  • nuclear physics - Why is the nucleus of an Iron atom so stable . . .
    This means that larger nuclei are less stable, and can form lower-energy configurations by splitting into smaller parts (fission) Iron is at the middle point in terms of nucleus size, where either adding or removing particles would result in a higher-energy configuration, and so it is regarded as the most stable nucleus
  • radioactivity - Why is nickel-56 not a stable nuclide? - Chemistry . . .
    The competition between electromagnetic and internuclear forces leads to stable isotopes generally not being the most "magical" with respect to internuclear forces alone For example, with 50 as the magic number: Zirconium-90, the most abundant isotope of that element, has 50 neutrons but only 40 protons
  • Why are the elements of the periodic table stable? [duplicate]
    When we get to the element Tc (43 protons) we encounter the lightest element with no stable isotopes (its most stable form has 55 neutrons but still decays with a half life of millions of years) As we go even higher the proton repulsion becomes more dominant and eventually at U (with 92 protons the last element with stable isotopes) the stable part of the periodic table is exhausted
  • Which element has the highest binding energy per nucleon
    For elements with stable isotopes I'd guess only the stable ones are shown For elements with unstable isotopes than some selection process is necessary so as not to clutter up the plot too much I'll point out that the "peak" is marked as "Iron Group " It isn't entirely clear what isotopes that means
  • Why do all elements above - Physics Stack Exchange
    OK, so $\ce{Fe}$ is the most 'stable element' As such, why do all elements above it not decay into $\ce{Fe}$? In all cases, would it not lead to an increase in binding energy and therefore energy been released, meaning it is energetically feasible, and should happen spontaneously (given enough time)?
  • radioactivity - Elements with most commonly occurring isotope being . . .
    $\begingroup$ Fe-56 is the most stable iron isotope and the most abundant Ni-62 has the highest binding energy of all but is not the most abundant Ni isotope Nuclide formation in stars is complex as is radioactive decay and artificial element manufacture There is a lot in Wikipedia $\endgroup$ –
  • Why isnt protium nucleus considered most stable nucleus?
    $\begingroup$ Don't forget that "binding energy" is relative Say the binding energy per nucleon of an isolated proton is 0, then the binding energy per nucleon of an iron nucleus is lower than zero (hence nuclear processes in stars can release energy by banging protons together to make heavier nuclei like iron (it is way more complex than this in reality but this view captures the essential
  • inorganic chemistry - What is the most stable oxide of francium . . .
    As the article states that $\ce{FrO2}$ is quite covalent, it couldn't withstand the intense heat that Fr atoms emit together from within $\ce{FrO2}$ and thus $\ce{Fr2O}$ which is more stable is favorable over $\ce{FrO2}$ This is the same reason we couldn't get an observable chunk of francium element in nature as of yet, either in free state or in combined state





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