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7 October, 09:34

What is the most likely decay for the fe-53 nucleus?

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  1. 7 October, 10:33
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    The element number of Fe is 26, which means that the number of neutrons of the following isotopes is:

    53-Fe: 27

    54-Fe: 28

    56-Fe: 30

    57-Fe: 31

    58-Fe: 32

    59-Fe: 33

    Because 53-Fe has too few neutrons when compared to the other isotopes we can rule out any decay that involves losing a neutron: (alpha decay, beta decay) So, this isotope will prefer to decay by electron capture or positron emission (assuming the system has about 1 MeV to spare), but in each case the product will be the same: 53-Mn (long-lived radioisotope).
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