Chemistry - Solid State Question with Solution | TestHub

(A) Correct: In a simple cubic unit cell, the minimum distance between two cubical voids is equal to edge length $a$.

(B) Incorrect: Crystalline solids are anisotropic in nature due to different properties in different directions.

(C) Correct: NaCl structure has 4 Na⁺ ions and 4 Cl⁻ ions effectively per unit cell.

(D) Correct: ZnS shows Frenkel defect because smaller Zn²⁺ ions occupy interstitial sites.

Correct options: A, C, D