Which hypothesis of Thomson's atomic model was later found to be not true by Niels Bohr and why?

Answer

The hypothesis of Thomson's atomic model that stated electrons were embedded in a positively charged sphere was found to be not true by Niels Bohr because his experiments showed that electrons were arranged in discrete energy levels or shells, and this model did not account for the stability of atoms or why electrons did not collapse into the nucleus.

Q:What were the hypotheses of Thomson's atomic model? A:Thomson's atomic model was known as the plum pudding model, where negatively charged electrons were embedded in a positively charged sphere.
Q:What hypothesis of Thomson's atomic model was found to be not true by Niels Bohr? A:Niels Bohr's experiments showed that the electrons should be arranged in discrete energy levels, known as shells or orbits.
Q:Why was this hypothesis of Thomson's atomic model not true? A:Thomson's model did not account for the stability of atoms and why electrons did not collapse into the nucleus.