The electrons move around the nucleus in spherical orbitals which have a fixed size and energy.Due to the presence of discrete lines in the line spectra, Bohr stated that the orbitals of an atom have fixed energies and electrons can jump from one energy level to the other while emitting or absorbing energy, resulting in a line in the line spectra. Bohr model also explains that these electron shells are located at discrete energy levels.īohr model was developed with observations of the line spectra of the hydrogen atom. This model is more advanced than Rutherford model which does not describe the movement of electrons along electron shells around the nucleus. It is considered as a modification of the Rutherford model. Key Terms: Bohr Model, Electron, Electron Shells, Quantum Model, Quantum Numbers, Rutherford Model, Stark Effect, Zeeman Effectīohr model is an atomic model that was proposed by Niels Bohr (in 1915) to explain the structure of an atom. What is the Difference Between Bohr and Quantum Model The main difference between Bohr model and Quantum model is that Bohr model explains the particle behavior of an electron whereas quantum model explains the wave-particle duality of an electron. Quantum model is considered as the modern model to describe the structure of an atom. Bohr model is an advanced model, but it failed to explain some effects such as Zeeman effect and Stark effect that were observed in line spectra of large atoms. Bohr and quantum models are two such models. Various scientists proposed different models to explain the structure of an atom.
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