O Thomson Atomic Model is the theory of atomic structure proposed by Joseph John Thomson.
Thomson's studies showed that the atom was formed by electrons that were attached to a sphere containing an electrical charge with positive polarity.
While studying the existence of subatomic particles he noticed that there were particles with a negative charge smaller than the atom.
This research indicated that the electrons were in a part of the atom that had a positive charge. The atom would be shaped like plums in a pudding.
Because of this, in the year 1898, the study was called “Plum Pudding Model” or “Pudding with Raisins”.
See the Atomic Models.
Thomson believed that the atom had zero charge. Because the atom was formed and positive and negative charges that cancel each other out because their charges are equal.
The physicist's researches were important for the evolution of the atomic theory. The Model Thomson presented replaced Dalton's atomic model known as the “billiard ball model”.
Later, Thomson's own model was replaced by Rutherford's atomic model who was a student of Thomson. Thomson discovered the electron, Rutherford the proton, and Cadwick discovered the neutron.
We also recommend: Bohr's Atomic Model
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