Memory The atom & periodic table Version en ligne Match the pairs! par Nikita Fitzpatrick William Crookes used this to help to discover cathode rays The spectrum gained when light is emitted through electron movement down levels Thomson used this device to determine that cathode rays have a - charge The spectrum gained when light is absorbed George Stoney gave this a name..... This experiment helped to discover the mass to charge of an electron A image taken in the same region of light as the Paschen series Put forward a theory for the atom based on the element hydrogen
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