Sections Review

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Vocabulary

electron element ground state
ion isotope neutron
proton

Review Questions

  1. Where are electrons, protons, and neutrons located in the atom? Can the electron be found at any position or energy in the atom?
  2. How does the Bohr atom model explain emission line spectra?
  3. Which produces a shorter wavelength of light: an electron jumping from the 6th to 2nd energy level, or one jumping from 3rd to 2nd energy level? Explain your answer.
  4. How does the Bohr atom model explain absorption line spectra?
  5. Which would produce an absorption line at a longer wavelength: an electron jumping from the 1st to 5th energy level, or one jumping from 1st to 3rd energy level? Explain your answer.
  6. Which will produce a stronger absorption line: a 10,000 K cloud with 100 particles in front of a hot star or a 10,000 K cloud with 1,000,000 particles in front of a hot star? Why is that?
  7. If the atom absorbs a photon and later emits it, why do we see any absorption lines at all?
  8. How does the Bohr atom model explain thermal spectra?
  9. How will the spectra from atoms of the hydrogen isotopes deuterium and tritium compare to the spectra of ordinary hydrogen atoms?
  10. Why would you not expect the absorption lines of the calcium ion Ca+ to be the same as the ones of neutral calcium Ca?
  11. Will the hydrogen ion H+ produce any absorption lines or emission lines? Explain your answer.
  12. How do we know that the laws of physics (nature) are the same everywhere in the universe and that they are the same throughout time?

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last updated: June 10, 2010

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Author of original content: Nick Strobel