![]() He showed that electrons move around the atomic nucleus in circular paths orbits with well-defined energy (quantum mechanical energy), thus being an energy level or electronic layer. So, in 1913, Bohr proposed some postulates that altered the view of Rutherford's atomic model. Niels Bohr related the line spectra of the elements. How did Bohr expand on Rutherford's model of the atom? The negatively charged electrons present around the atom do not affect the scattering of the alpha particles. The atomic nucleus concentrates the mass and the positive charges of the atom, balancing the electrical charge of the electrons. However, Rutherford pointed out that the nucleus of the atom is tiny compared to the atom itself. ![]() Rutherford denied Thomson's atomic model by confirming the existence of the atomic nucleus, already postulated by Nagaoka. What are the postulates of Rutherford’s model? Radiation can occur only when the electron jumps from one orbit to another.Īs re showed the atom with a nucleus and electrons orbiting around it, like the planets of the solar system, it became known as the planetary model. Rutherford did not say anything about the electrons’ possible movement because he knew that their revolution around the central nucleus would cause electromagnetic radiations. ![]() The presence of electrons revolving around the atomic nucleus. The concentration of most matter in a small volume compared to the atomic size, that is, an atomic nucleus The new model proposed by Rutherford had features that have been maintained even in later models, such as: ![]() The Rutherford scattering observed in the investigation suggested that the early "Panettone" and "Saturnian" atomic models were incorrect. In 1909 the Geiger and Marsden experiment was performed, also known as the Rutherford experiment, as it was led by Rutherford himself. Rutherford's atomic model or planetary model of the atom is a model proposed by Ernest Rutherford. ![]()
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