AP Chemistry - Modern Electron Theory Test

  1. An electron has the following values for quantum numbers: n=4, l=2, m=-2, ms=-1/2. Draw the orbital that these values describe. If they could describe more than one possible orbital, draw all possibilities. Label the axes, as well as any angular and spherical nodes. If the numbers point to only one orbital justify why it must be the one you have drawn.
  2. What is wrong with the following question and why is it wrong?
  3. "How would the drawing(s) in number 1 change if l=1?"

  4. How can two electrons share a single orbital and why ONLY two?
  5. Why could Schrodinger not have done his work before De BrØglie?
  6. In the photoelectric experiment, people rejected the argument that the difference in behavior with red and blue light was simply due to differences in energy. Why did they reject that hypothesis and what was Einsteinís explanation?
  7. Draw ANY Y v. r graph and its corresponding Y 2 v. r and 4p r2Y 2 graphs. What is the primary difference between the last two and why does that difference exist?
  8. What are the electron configurations for the following elements and ions. You may use the noble gas configuration if you wish.
  9. Hs (#108)

    Si (14)

    Mo (42)

    Os (76)



  10. Which of the ions of Osmium above is more stable and why?
  11. Name one of the three problems with Bohrís theory and explain how Schrodinger dealt with it.