This person's work with neon gas showed that an element could have more than one stable isotope.
This person's work with neon gas showed that an element could have more than one stable isotope. His experiments had more accurate results than others because he pumped air out of his equipment, leading to mass spectrometry, and he is associated with the plum pudding atomic model. Before Millikan measured the charge on an electron, this man measured its mass to charge ratio. Name this scientist whose experiments with cathode ray tubes led to him being credited for discovering the electron.
This person's work with neon gas showed that an element could have more than one stable isotope.
(Sir Joseph John) Thomson