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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
27
Early Quantum Theory and Models of the Atom
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27-1: Discovery of the Electron
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27-2: Blackbodies; Planck's Quantum Hypothesis
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27-3 and 27-4: Photons and the Photoelectric Effect
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27-5: Compton Effect
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27-6: Pair Production
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27-8: Wave Nature of Matter
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27-9: Electron Microscope
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27-11 and 27-12: Spectra and the Bohr Model
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 49
Q

For the three hydrogen transitions indicated below, with n being the initial state and n' being the final state, is the transition an absorption or an emission? Which is higher, the initial state energy or the final state energy of the atom? Finally, which of these transitions involves the largest energy photon?

  1. n = 1, n' = 3;
  2. n = 6, n' = 2;
  3. n =4, n' = 5.
A
  1. absorption, final state has higher energy
  2. emission, initial state has higher energy
  3. absorption, final state has higher energy
The transition from n = 1 to n' = 3 involves the highest energy photon
Giancoli 7th Edition, Chapter 27, Problem 49 solution video poster
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