The Nobel Prize in Chemistry 1922 - NobelPrize.org
The Nobel Prize in Chemistry 1922 was awarded to Francis William Aston "for his discovery, by means of his mass spectrograph, of isotopes, in a large number of non-radioactive elements, and for his enunciation of the whole-number rule." To cite this section MLA style: The Nobel Prize in Chemistry 1922. NobelPrize.org. Nobel Prize Outreach AB 2021.
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