Wednesday, October 8, 2008

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model of Bohr's atomic model Rutherford's atomic model


This model was developed by physicist Ernest Rutherford from the results in what is now known as the deRutherford experiment in 1911. Represents an advance over Thomson's model because it maintains that the atom consists of a positive and a negative, however, unlike the previous, postulates that the positive part is concentrated in a nucleus, which also contains virtually all the mass of the atom, while electrons are located in a crust orbiting the nucleus in circular or elliptical orbits with an empty space between them. Despite being an obsolete model, is the most common perception atom non-scientists. Rutherford predicted the existence of the neutron year 1920 , for that reason in the previous model (Thomson), do not talk about it.
Unfortunately, the atomic model of Rutherford had several inconsistencies:
contradicted the laws of electromagnetisimo
of James Clerk Maxwell, which were well proven by experimental data. According to the laws of Maxwell, a moving electrical charge (in this case the electron) should emit energy as radiation constantly and come a time in which the electron would fall on the core and the material would be destroyed. Happen all too briefly.
Not explain atomic spectra.

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