Solid State - Crystal Lattices, Unit Cells

Grade 12 Chemistry — Solid State - Crystal Lattices, Unit Cells: 25 practice questions with instant scoring and explanations.

1. Which type of crystal lattice has atoms at corners and body center of a cube?
2. In a face-centered cubic (FCC) unit cell, how many atoms are present per unit cell?
3. What is the coordination number for a simple cubic unit cell?
4. Which crystal system has all edges equal and all angles equal to 90°?
5. The edge length of a cubic unit cell is 'a'. The distance between nearest neighbors in BCC is:
6. In body-centered cubic packing, the packing efficiency is approximately:
7. What is the formula for the number of atoms in a BCC unit cell?
8. Which type of lattice has the highest coordination number?
9. The density of a crystal is given by the formula:
10. What is the relationship between edge length 'a' and atomic radius 'r' in FCC?
11. In a primitive cubic unit cell, the atoms touch along which direction?
12. The Miller indices (100) represent:
13. What is the packing efficiency of FCC?
14. In hexagonal close packing (HCP), the coordination number is:
15. The lattice parameter 'a' in terms of radius 'r' for BCC is:
16. Which crystal system has two equal edges and angles of 90°?
17. The number of atoms per unit cell in a simple cubic lattice is:
18. What is the space diagonal of a cubic unit cell with edge length 'a'?
19. In cubic crystal system, axial angles (α, β, γ) are:
20. The atoms at edges of a unit cell contribute what fraction each to the cell?
21. Which of the following statements about FCC is correct?
22. The relationship between lattice parameter and atomic radius in simple cubic is:
23. What is the packing efficiency of simple cubic unit cell?
24. In a tetragonal crystal system:
25. The coordination number in HCP is: