In this lab you will use a spectrometer to measure the wavelengths ofseveral visible lines emitted from hydrogen gas, a.k.a. the Balmer series.Sketch and label an energy level diagram for hydrogen, and draw thetransitions corresponding to the first four lines in the Balmer series (nf = 2).For the first four lines, indicate which is toward the red end of the spectrumand which is toward the purple end.

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Q: Calculate (a) the wavelength and (b) the line of the Balmer series for hydrogen. frequency of the HB

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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: