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11 November, 12:53

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

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  1. 11 November, 13:55
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    Answer is: the electrons are embedded in the positive charge.

    J. J. Thomson discovered the electron in 1897.

    Thomson suggested "plum pudding" model in 1904.

    According to the Bohr model of the atom:

    1. Electrons orbit the nucleus in orbits that have a set size and energy.

    2. Energy levels of electrons are discrete (certain discrete values of energy).

    3. Electrons can jump from one energy level to another, absorbing or emitting electromagnetic radiation with a frequency ν (energy difference of the levels).
  2. 11 November, 14:03
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    J. J. Thompson hypothesized the atom in the form a positively charged sphere with negatively charged electrons floating the positively charged sphere. This was referred to as the Plum-pudding model. This assumption about the atom was shown to be incorrect by the next set of scientists Rutherford (planetary model) and Neils Bohr as the mass of the atom is localized at the center in the positively charged nucleus around which the negatively charged electrons orbited in specific paths. Bohr proposed that the energy levels or orbits in which the electrons revolve round the nucleus are quantized.
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