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Free Electron In Metals - Coggle Diagram

- - - - The equilibrium positions of the atomic cores are positioned on the crystal lattice and surrounded by a sea of conduction electrons.
        
        For Na, the conduction electrons are from the 3s valence electrons of the free atoms. The atomic cores contain 10 electrons in the configuration: 1s22s2p6.
- - - - Neglect electron - ion core interaction
        
        Free electron approximation
      - Neglect electron - electron interaction
        
        Independent electron approximation
    - - Assuming electrons bouncing off the ion core
      - Assuming some form of scattering
    - - Collision mean free time
      - Independent of electron position and velocity