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Chemistry, 7/e
Raymond Chang, Williams College
Quantum Theory and the Electronic Structure of Atoms

Internet Exercises

http://theory.uwinnipeg.ca/physics/quant/node3.html
(http://theory.uwinnipeg.ca/physics/quant/node3.html)

  1. The photoelectric effect, developed by Albert Einstein, is a phenomenon in which electrons are ejected from the surface of certain metals in response to being exposed to light of at least a certain minimum frequency. The website at http://theory.uwinnipeg.ca/physics/quant/node3.html gives a basic representation of the apparatus that produces a photoelectric current. Sketch the appartus shown, and then answer the following, using the concepts provided at this site.
    1. Calculate the energy in joules of a photon with a wavelength of 635 nm.
Study the movie and images
(http://squier.ucsd.edu/education/gchem/qmbasics/qmexplreact.html)

  1. Quantum chemistry is closely knit to biological processes, such as the transformation of retinal in the eye, which allows us to see. Study the movie and images at http://www-wilson.ucsd.edu/education/pchem/qm/viselectronstate.html, provided by the Wilson Group, and answer the following.
    1. What happens to electrons when they are irradiated with light?
    2. Why does retinal undergo a conformational change when it is exposed to light?
    3. How does this allow us to see?








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