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(a) Two views of the structure of an inorganic AB type compound are shown below. State, with explanation, which structural type this corresponds to and describe the struc terms of close packing.

(a) Two views of the structure of an inorganic AB type compound are shown below. State, with explanation, which structural type this corresponds to and describe the struc terms of close packing.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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(a) Two views of the structure of an inorganic AB type compound are shown below. State, with explanation, which structural type this corresponds to and describe the struct terms of close packing. (b) A polymorph of lead tungstate, Pb(WO.), is found to crystallise in the monoclinic crystal system. The Miller indices of the reflections present in the X-ray powder diffraction pattern are given below (standard setting with b-axis unique). Based on the systematic absences in these data, suggest a possible space group for this crystal structure. J answer. hkl 11-1 hkl hkl 10-1 30-1 0 02 301 3 10 200 101 210 111 110 2 1-1 011 211 0 20 (c) A first row transition metal oxide cation, has an outer electronic configuration of 3d 4s° and its oxide MO exhibits the rocksalt structure and metallic conductivity. (i) Starting with the outer electronic orbitals of the metal cation and oxide ions as a first approximation, predict and sketch the band structure of this metal oxide. Clearly indicate on your diagram the Fermi level, the valence band and the conduction band. (ii) What is the likely identity of M? Justify your answer.
Transcribed Image Text:(a) Two views of the structure of an inorganic AB type compound are shown below. State, with explanation, which structural type this corresponds to and describe the struct terms of close packing. (b) A polymorph of lead tungstate, Pb(WO.), is found to crystallise in the monoclinic crystal system. The Miller indices of the reflections present in the X-ray powder diffraction pattern are given below (standard setting with b-axis unique). Based on the systematic absences in these data, suggest a possible space group for this crystal structure. J answer. hkl 11-1 hkl hkl 10-1 30-1 0 02 301 3 10 200 101 210 111 110 2 1-1 011 211 0 20 (c) A first row transition metal oxide cation, has an outer electronic configuration of 3d 4s° and its oxide MO exhibits the rocksalt structure and metallic conductivity. (i) Starting with the outer electronic orbitals of the metal cation and oxide ions as a first approximation, predict and sketch the band structure of this metal oxide. Clearly indicate on your diagram the Fermi level, the valence band and the conduction band. (ii) What is the likely identity of M? Justify your answer.
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