Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The photoelectric effect

  1. Aug 18, 2008 #1
    In the photoelectric effect, the electron is emitted from the innermost shell. Why not from the outer shells?

    Thank you
  2. jcsd
  3. Aug 18, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper

    That is not true 100% since photoelectric effect is for solids, and solid elements have different energy level structure, we don't talk about 'shells' there....
  4. Aug 18, 2008 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor

    As malawi_glenn has said, you have read something incorrectly (this is why we often ask for the full citation of your sources). The standard photoelectric effects produces photoelectrons that came from the top of the conduction band, which is the "valence" band of the electronic band structure. There are no "shells". A solid does not have the same behavior as the individual atoms/molecules that make up the solid.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook