What are the limitations of J.J. Thomson's model of the atom?

Answer:

According to J.J. Thomson’s model of an atom, an atom consists of a positively charged sphere with electrons embedded in it. In 1897, he discovered negatively charged particles by cathode ray experiment. Thomson assumed that an electron is two thousand times lighter than a proton and believed that an atom is made up of thousands of electrons. In this atomic structure model, he considered atoms surrounded by a cloud having positive as well as negative charges.

Drawbacks of J.J. Thomson’s model of the atom

Some drawbacks of J.J. Thomson’s model of the atom are listed below.

  • Thomson’s model failed to explain the results of the alpha particle scattering experiment carried out by Rutherford. The majority of the alpha particle passes through the gold foil and deviated from different angles.
  • There were no experimental pieces of evidence provided by him. This was one of the major drawbacks of his model.
  • He failed to explain the stability of atoms.

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