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

Does a high emf excite electrons?

  1. Nov 28, 2014 #1
    The n = 2 energy level of lithium is 108.8 eV away from the n = 1 energy level. Does that mean, in a DC circuit, that if you put an emf of 108.8 V along a lithium wire, that the high voltage will excite an electron to the n = 2 level?
     
  2. jcsd
  3. Nov 28, 2014 #2

    Drakkith

    User Avatar

    Staff: Mentor

    Nope, an electron volt is a unit of energy, not of electric potential (voltage).
     
  4. Nov 28, 2014 #3

    Philip Wood

    User Avatar
    Gold Member

    In solid lithium, the energy levels of the 'outer' electrons are quite different from what they are in a lithium atom. In the solid these electrons are 'pooled' and lose their allegiance to particular atoms. These pooled electrons are responsible for the bonding of the atoms, and for the conduction of electricity. Their energy levels form bands of extremely closely spaced levels.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook