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Match List - I with List - II {:(,"Lis...

Match List - I with List - II
`{:(,"List - I",,"List - II"),((P),"Zinc blende structure",(1),"oxide ions in hcp and 2/3rd of octahedral voids occupied by the trivalent cation."),((Q),"Anti-fluorite structure",(2),"anion in FCC arrangement and alternate tetrahedral voids occupied by bivalent cation."),((R ),"Corundum structure",(3),"Oxide ions in face centres of cubic, bivalent cations in corners and one tetravalent cation ions."),((S),"Pervoskie structure",(4),"Anions in FCC and cations in all tetrahedral voids"):}`

A

P-1, Q-2, R-4, S-3

B

P-2, Q-4, R-1, S-3

C

P-4, Q-1, R-3, S-3

D

P-4, Q-3, R-2, S-1

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem of matching List - I with List - II, we will analyze each crystal structure in List - I and find the corresponding description in List - II based on the arrangement of cations and anions in the crystal lattice. ### Step-by-Step Solution: 1. **Zinc Blende Structure (P)**: - Zinc blende (ZnS) has Zn²⁺ cations and S²⁻ anions. - The structure is face-centered cubic (FCC) where S²⁻ ions occupy the face-centered positions, and Zn²⁺ ions occupy half of the tetrahedral voids. - **Matching**: The description that fits this is "anion in FCC arrangement and alternate tetrahedral voids occupied by bivalent cation." - **Answer**: P → 2 2. **Anti-fluorite Structure (Q)**: - Anti-fluorite (Na₂O) has Na⁺ cations and O²⁻ anions. - In this structure, O²⁻ ions are arranged in FCC, while Na⁺ ions occupy all the tetrahedral voids. - **Matching**: The correct description is "Anions in FCC arrangement and alternate tetrahedral voids occupied by bivalent cation." - **Answer**: Q → 4 3. **Corundum Structure (R)**: - Corundum (Al₂O₃) consists of Al³⁺ cations and O²⁻ anions. - The O²⁻ ions occupy the hexagonal close-packed (HCP) arrangement, while Al³⁺ ions occupy two-thirds of the octahedral voids. - **Matching**: The description that matches is "oxide ions in hcp and 2/3rd of octahedral voids occupied by the trivalent cation." - **Answer**: R → 1 4. **Pervoskite Structure (S)**: - Pervoskite (CaTiO₃) includes Ca²⁺, Ti⁴⁺, and O²⁻ ions. - In this structure, O²⁻ ions are in FCC arrangement, Ca²⁺ ions are located at the corners, and Ti⁴⁺ ions are at the body center. - **Matching**: The correct description is "Oxide ions in face centres of cubic, bivalent cations in corners and one tetravalent cation." - **Answer**: S → 3 ### Final Matching: - P → 2 - Q → 4 - R → 1 - S → 3 Thus, the correct matches are: - P: 2 - Q: 4 - R: 1 - S: 3
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