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does the atomic number of an atom change does the atomic number of an atom change why or why not does the atomic number of an element change when do the atomic number of an element change can the atomic number of an element change will the atomic number of an element change does the atomic number of an element never change does the atomic number of an element change when its atom forms ions can the atomic mass of an element change does the mass number of an atom change when its nucleus absorbs a neutron
