Band theory of solids

4. What interaction causes the splitting of energy levels in solids?
6. What term describes the mass of an electron when accelerated by an electric or magnetic field in a lattice?
7. What band is responsible for the electrical conductivity in solids?
9. What type of band is partially filled or overlaps with the valence band in metals?
11. What theory is used to describe the behavior of free electrons in solids?
14. Which equation is used to describe the wave function of electrons in a crystal lattice?
16. What zones mark the boundaries in the energy versus wave vector (K) curve?
17. What type of energy variation is considered in the electron theory of metals?
18. What type of bands are formed due to the overlap of atomic orbitals in solids?
19. What type of materials have a wide forbidden energy gap?

1. What is the term for the energy gap between the valence band and the conduction band?
2. What type of materials have a narrow forbidden energy gap?
3. What type of potential do electrons experience in a crystal lattice?
5. What particle's behavior is described by the band theory of solids?
8. What type of distribution describes the occupancy of electron states in solids?
10. What is the name of the band that is completely filled with electrons at 0K?
12. What energy level is the highest occupied state at absolute zero temperature?
13. What model describes the motion of electrons in a periodic potential using square well potentials?
15. What structure is composed of ion cores and conduction electrons in a crystal?
16. What theorem explains the behavior of electrons in a periodic potential?