The Balmer series for the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum number n = 2 as shown in the figure below. Consider the photon of longest wavelength corresponding to a transition shown in the figure. त Balmer series ENERGY 11 00 (a) Determine its energy. eV (b) Determine its wavelength. nm (d) Find its wavelength. E (eV) 0.00 nm -0.378 -0.544 2 -0.850 4 -1.512 -3.401 Consider the spectral line of shortest wavelength corresponding to a transition shown in the figure. (c) Find its photon energy. eV Ⓡ (e) What is the shortest possible wavelength in the Balmer series? nm

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The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: