Chemistry - Solid State Question with Solution | TestHub
Match the column-
List - I | List - II |
|---|---|
(A) Effective number of formula units per unit cell is 4 | (P) NaCl type |
(B) Cations in tetrahedral voids | (Q) ZnS type |
(C) Cations in octahedral voids | (R) CsCl type |
(D) Cations in Cubical void | (S) Flourite structure |
| (T) Antifuorite structure |
Options:
Answer:
Solution:
(A) (P, Q, S, T): NaCl, ZnS, Fluorite, and Antifluorite structures all contain exactly 4 formula units () per unit cell.
(B) (Q, T): Cations occupy tetrahedral voids in ZnS (half of the voids) and Antifluorite structures like Na₂O (all voids).
(C) (P): In the NaCl structure, Na⁺ cations occupy all the octahedral voids of the FCC lattice.
(D) (R, S): Cations occupy cubical voids in CsCl (body center) and Fluorite structures (alternate cubical voids when viewed with anions forming a simple cubic sub-lattice).
