Q2(d). Defects and solid-state properties
Match the following: (i) Schottky defects; (ii) Frenkel defects; (iii) Non-Stoichiometric compound; (iv) Semiconductor; (v) Corundum structure; (vi) Conductor at room temperature. (A) ReO₃; (B) Ti₁₋ₓO; (C) Silver halides; (D) CaF₂; (E) GaAs; (F) Ti₂O₃.
Answer in brief
(i)-D; (ii)-C; (iii)-B; (iv)-E; (v)-F; (vi)-A.
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The full model answer
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CoversSchottky defectFrenkel defectnon-stoichiometric compoundscorundum structureReO3 conductor
All parts of Question 2
- 2(a) Two perovskite unit-cell origins10 marks
- 2(b) Increasing silicon conductivity10 marks
- 2(c) Fullerite basis and ammonolysis4 marks
- 2(d) Defects and solid-state properties6 marks