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Draw the typical energy band diagram of a metal and answer the following questions;
1. The vacuum level
2. The Fermi Energy Level
3. The Work Function
4. What is the main difference between a Conductor and an Insulator ?

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1. Draw the typical energy band diagram of a metal and provide brief explanation for it. (Hint: Your should include the "Vacuum Level", the "Fermi Level" and the "Work Function" in your answer.) 2. What is the main difference between an "Insulator" and a "Semiconductor" from the energy band diagram point of view?
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