![]() Due to the failure of Thomson’s Plum Pudding Model for explaining the above phenomenon, this model got rejected.Įven though the Thomson’s Plum Pudding Model represents a considerable progress towards the truth of the matter but it failed to explain these facts. Dalton’s atomic theory stated that the atom was indivisible and indestructible. In 1900, JJ Thomson propounded the presence of a negatively charged particle inside an atom, equal in magnitude but opposite in sign to that of the proton. Thomson experiment with cathode ray tubes 2 See answers. According to Thomson’s Plum Pudding Model, it can emit the light at single frequency whereas, practically it emits the light spectrum which consists of different frequencies. These rays ultimately led to the discovery of a sub-atomic particle, named proton, which had a positive charge. Based on the article Will the real atomic model please stand up, why did J.J. For example, lets consider the emission of light from hydrogen atom having a single electron. It also failed to explain the existence of light spectrum. Thomson, disproved that the Daltons theory of indestructible nature of atom All atoms contain negatively charged. This model failed to explain the emission of electron spectrum consisting of different frequencies from Thomson’s atom when it is subjected to external frequencies emitted from other substances. Atoms can be broken into smaller particles. The Thomson’s Plum Pudding Model was given up as it failed to explain the existence of some observed phenomena. But the Thomson’s Plum Pudding Model assumed its place in history as the first modern attempt to construct a theory of atomic structure. After Ernest Rutherford’s nuclear model of the atom in 1911, the interest in Thomson’s Plum Pudding Model fell off rapidly. Thomson discovered that the cathode ray was made of particles. ![]() When the ray was bent, no electric charge could be detected at the other end. This cylinder had two slits in it, leading. His first experiment was to build a cathode ray tube with a metal cylinder on the end. Thomson invented to test the theory that negative charges in an atom were real. What is the cathode ray tube The cathode ray tube was what J.J. Thomson’s Plum Pudding Model hold sway for few years until the Ernest Rutherford announced the nuclear model of the atom in the year of 1911. 1st Experiment Thomson put a magnetic field around the cathode ray tube. Thomson had an inkling that the ‘rays’ emitted from the electron gun were inseparable from the latent charge, and decided to try and prove this by using a magnetic field. Thomson is the scientist that discovered electrons through an experiment called the Cathode Ray Experiment.
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