Answer: n-type.
- A p-type
- B n-type
- C Intrinsic
- D Metallic
Correct answer: B. n-type
Explanation: Phosphorus has 5 valence electrons; the extra electron becomes a charge carrier, making silicon an n-type semiconductor.
The three cubic unit cells: Simple Cubic has atoms only at corners; Body-Centred adds one atom at the centre; Face-Centred adds one atom at the centre of each of the 6 faces, giving the highest packing efficiency.
Concept context
Explore the ordered world of crystalline solids: unit cells, packing, defects, and how structure determines electrical and magnetic properties.