English chemist, who in 1808, he proposed an early form of the Atomic Theory
English physicist who carried out experiments with discharge tubes around the 1870s
Electrons emitted from gases in discharge tubes
J J Thomson
Scottish physicist who discovered the electron and worked out its charge to mass ratio (e/m)
Irish scientist who suggested the name for the electron
American physicist who devised the oil drop experiment which allowed the charge on the electron to be calculated.
Name given to the model of the atom proposed by J J Thomson
New Zealander who discovered the nucleus in 1911 and the proton in 1918.
Geiger & Marsden
Rutherford's assistants who carried out the gold foil experiment.
Danish scientist who proposed a new model of the atom in 1913 which was based on energy levels.
He discovered the neutron in 1932.
English scientist who invented the mass spectrograph in 1919, and along with J J Thomson, first detected isotopes.
Arising from his work with X-rays in 1913, the Periodic Table was rearranged in order of the atomic number of the elements.
This German chemist grouped the elements in threes.
He proposed the Law of Octaves in grouping the elements.
Russian chemist who is credited with the modern Periodic Table.
This French scientist discovered radioactivity.
Pierre and Marie Curie
Husband and wife team that discovered polonium and radium.
German who proposed the Uncertainty Principle
Joint Nobel Prize winner in 1933 for his work on wave equations.
Louis de Broglie
This French physicist suggested that electrons have wave properties.