Electronic Materials

2. For a ____ crystal system a=b=c and all the angles are 90 degrees
4. ____ crystal system has one of the angle as 120 degrees
5. ____ is arranged on the lattice points to form a crystal structure
6. In ______ unit cells atoms occupy only the corners
7. In ____ centered atoms additionally occupy the two opposite faces.
10. Density of states gives the number of _____states for electron to occupy
11. According to quantum free electron theory energy values are _______
12. ______is the smallest unit of a crystal structure
13. At 0K semiconductor behaves like an _____
16. ____materials have periodic arrangement of atoms

1. ____parameters refers to the physical dimension of unit cells
3. Electrical and thermal conductivities of metals were explained by ______ free electron theory
8. ______ cell contains exactly one lattice point
9. According to quantum free electron theory, a conduction electron experiences a constant ________
11. Specific heat of metals were able to explain by _____ free electron theory
14. _______ materials have random arrangement of atoms
15. According the classical free electron theory, electrons are _____ to move in all directions