Energy Bands in solids

Discussion in 'Physics' started by logearav, Nov 12, 2011.

  1. logearav

    Thread Starter Member

    Aug 19, 2011
    Revered Members
    Considering isolated Lithium atom which has 3 electrons, K shell will have 2 electrons with energy -13.6eV. L shell will have 1 electron with energy -3.4eV. Now , considering a small piece of Lithium metal containing 100 atoms, then there would be 100 K levels and 100 L levels differing in energy by extremely small amounts. We call it as energy band.
    Why there is small change in energy when there is energy band, while there is no energy change for isolated atoms?
  2. Wendy


    Mar 24, 2008
    Last edited: Nov 13, 2011
    logearav likes this.