Answer: Decreases density.
- A Increases density
- B Decreases density
- C Does not change density
- D Doubles density
Correct answer: B. Decreases density
Explanation: Schottky defects create vacant lattice sites; the same volume now contains fewer atoms, so the density decreases.
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.