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study guide for lab final

study guide for lab final - Investigation of the Lyman...

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Investigation of the Lyman series The asymptotic value of light quantum energy for the Lyman series is En light = (-13.6)/(n^2eV) En light = delta infinity light [1- (1/n^2)] Investigation of the blamer series Balmer Series (delta EBalmer, infinity – delta Enlight) = 13.6 (n^2) N = (n+2) where n >2 Bohr’s Interpretation of the spectral series Series Energy Asymptotic Limit (eV) Lyman 13.6 Balmer 3.4 Paschen 1.511 Brackett 0.850 Pfund 0.544 Spectral Analysis of Charged hydrogen-like Atoms n-th atomic energy level for He+ is En,He+ = (-13.6 x 2^2)/ (n^2)eV or (- 54.4 eV)/ (n^2) the n-th atomic energy level for Li2+ is En, Li2+ = [-9(13.6)]/ (n^2) eV where [-9(13.6)] = -122.4 The relationship between the energy levels of H and Li can be expressed as the same basic relationship except that the energy of lithium is about 9 times greater than that of hydrogen. The formula for energy levels of Be3+ ion is [-16 (13.6)]/(n^2) eV or (- 217.6)/(n^2) eV Generalization for this particular lab: En, atom= [13.6(z^2)]/(n^2) where z is equal to the atomic number with only one
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