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27 September, 04:49

When an atom undergoes alpha decay

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  1. 27 September, 05:10
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    Are you asking for a specific atom or just the general definition?

    The general definition of alpha decay is the loss of two protons and two neutrons from a nucleus. (Also equal to a helium atom!) This decreases the total mass number by 4 and the atomic number by 2.
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