J.J. Thomson discovered the electron and proposed the plum-pudding model for the atom.
J.J. Thomson is credited with the discovery of the electron in about 1904. He envisioned negatively charged "corpuscles" floating in a positively charged cloud, just like plums in a plum pudding. This was the "plum pudding" model of the atom, and it lasted until Geiger and Marsden conducted their gold foil experiment in about 1909.
We should never say that an experiment has proven something. The Rutherford gold foil experiment led to the hypothesis that an atom's positive charge is concentrated in an incredibly small space at the atom's center.
Particles in the atom: Neutron: James Chadwick, 1932 Electron: J. J. Thomson, 1897 Proton: Ernest Rutherford, 1919
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The atomic theory of John Dalton is from 1801-1802.
Joseph John Thomson or (JJ Thomson)
It was J. J. Thomson (Joseph John Thomson)
Joseph John Thomson proposed his plum pudding model Of atom in the year of 1904.
the scientist behind the concept of the atom are joseph john thomson,goldstein, and james chadwick!
Joseph J. Thomson's postulates included the idea that electrons are negatively charged particles, they have a much smaller mass compared to atoms, and they are uniformly distributed within the atom. These postulates were part of Thomson's plum pudding model of the atom.
The atom research conducted by John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr contributed significantly to our understanding of the structure of the atom. Dalton proposed the atomic theory, Thomson discovered the electron, Rutherford formulated the nuclear model of the atom, and Bohr developed the planetary model of the atom. These discoveries paved the way for modern atomic theory and revolutionized our understanding of matter and chemical reactions.
Joseph John Thomson won the Nobel Prize in Physics in 1906 for his discovery of the electron and his work on the conduction of electricity in gases. Thomson's experiments with cathode rays led to the identification and understanding of these fundamental particles of the atom, laying the foundation for the development of atomic and quantum theories.
There were four scientists that discovered the atom. These scientist were John Dalton, William Crooke, J.J. Thomson and Ernest RuthThere were four scientists that discovered the atom. These scientist were John Dalton, William Crooke, J.J. Thomson and Ernest Rutherford.
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Thomson is responsible for discovering that an atom contains electrons.
J. J. Thomson
For the particles in the atom: Joseph Thomson, Ernest Rutherford, James Chadwick and many other precursors, contributors or collaborators.