Solid State - Packing, Voids, Defects

Grade 12 Chemistry — Solid State - Packing, Voids, Defects: 25 practice questions with instant scoring and explanations.

1. What is the maximum number of octahedral voids in a FCC unit cell?
2. In a closest packing arrangement, octahedral voids are located at:
3. The radius ratio (r⁺/r⁻) for octahedral coordination is:
4. Tetrahedral voids in FCC are located at:
5. The maximum number of tetrahedral voids in a FCC unit cell is:
6. What is the relationship between octahedral and tetrahedral voids in close packing?
7. Schottky defect involves:
8. Frenkel defect occurs when:
9. Which defect increases the density of crystal?
10. Which defect decreases the density of crystal?
11. In impurity defect, if Ca²⁺ replaces Na⁺ in NaCl, it is called:
12. Color centers (F-centers) are formed due to:
13. The number of tetrahedral voids per atom in HCP is:
14. The number of octahedral voids per atom in HCP is:
15. For a cation to fit into tetrahedral void without distorting the structure, the radius ratio should be:
16. Which type of defect is responsible for electrical conductivity in AgBr?
17. In ionic compounds, Frenkel defects are more common in:
18. The radius ratio for linear coordination is:
19. In a crystal with vacancies, the density:
20. Non-stoichiometric compounds exhibit:
21. When an atom is displaced to an interstitial position, creating a vacancy, it is:
22. The number of octahedral voids in a simple cubic unit cell is:
23. Dislocations in crystals lead to:
24. Which defect is observed in AgCl crystal?
25. The radius ratio for linear coordination is: