A hydrogen atom undergoes a transition from an excited state to the ground state by emitting a photon. The energy difference between the excited state and the ground state is 2.04 eV. The wavelength of the emitted photon is measured to be 656 nm. Calculate the frequency and the energy of the emitted photon in Joules. (Note: You may use the following conversions: 1 eV = 1.6 x 10^-19 J and the speed of light, c = 3.0

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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: