1. Define atom.
2. What is the basic particle of negative charge? and positive charge?
3. What does a typical atom consist of?
4. Define atomic number.
5. Do all elements have the same types of atoms? Why?
6. What is a free electron?
7. What is a shell in the atomic structure?
8. Name two conductive materials.
9. What are the particles in the nucleus of an atom?
10. Briefly explain what valence band is.
11. How many valence electrons in their valance band of a semiconductor atom?
12. What is the maximum number of electron in the fourth shell of an atom?
13. Conductivity depends on the number of electrons in conduction band. (True/False)
14. Where is the conduction band?
15. Describe energy level.
16. Describe energy gap.
17. What is intrinsic semiconductor?
18. What is the different between insulator, semiconductor and conductor materials?
19. Why Germanium only required small amount of energy to escape from their atom and become free electrons compared to the Silicon?
20. The electrons in the outermost shell having lower energy compared to the electrons in the innermost shell due to the attractive force, F. (True/False)
21. In the valence band, its contain 1 up to 8 electrons. (True/False)
Posts
0 comments:
Post a Comment