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03rd Jan 2020 @ 3 min read
Rutherford's atomic model or atomic theory is one of the earlier atomic models. The model was proposed by Rutherford in 1911. It was a revolutionary at that time and made a major breakthrough in the atomic world.
In the 1900s, Thomson's atomic model was prominent. Thomson depicted an atom as a cloud of uniform positive charge with negatively charged electrons suspended in the cloud.
Some scientists did not agree with Thomson's theory, especially Hantaro Nagaoka, who was a Japanese physicist. In 1904, Nagaoka rejected Thomson's model and suggested a model similar to our planetary system. Nagaoka's predictions turned true when Rutherford had discovered the nucleus.
Ernest Rutherford was a New Zealand-born English Nobel laureates, also known as the father of nuclear physics. From 1908 to 1913, Rutherford along with his colleagues Hans Geiger and Ernest Marsden conducted a series of experiments, which is now called Rutherford's gold foil experiments. The observations of the experiments led him to discover the nucleus. In 1913, he affirmed the presence of the nucleus and formulated a new atomic model, which replaced a decade-old Thomson's theory.
Interesting facts: Rutherford is not only known for the discovery of the nucleus but also for the discovery of alpha, beta, and gamma rays. He was a student of J.J. Thomson, whom he proved wrong.
On the basis of the results of the gold foil experiment, Rutherford proposed a nuclear model of the atom. It is described as follows:
Note: It was this central, heavy region that deflected alpha particles in the gold foil experiment.
Although the model was successful in explaining the gold foil experiment, it has many limitations
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