True or false on semiconductors

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   The conduction band sits above the valence band.

2. Statement is true

   No

   Statement

   The conduction band is normally crowded.

3. Statement is true

   Yes

   Statement

   Overlapping bands make a metallic conductor.

4. Statement is true

   No

   Statement

   A pure semiconductor conducts very well.

5. Statement is true

   Yes

   Statement

   Doping means adding a chosen impurity.

6. Statement is true

   No

   Statement

   Silicon is a trivalent element.

Instructions

Decide whether each statement is true or false.

Explanation