81.Name a salt that can be added to AgCl so as to produce cation vacancies.
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82.
How many lattice points are there in one unit cell of each of the following lattice? (a) face centred cubic (b) face centred tetragonal (c) body centred cubic
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83.Find out the number of atoms per unit cell in a face-centred cubic structure having only single atoms at its lattice points.
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84.What makes alkali metal halides sometimes coloured, which are otherwise colourless?
85.What is the difference between ccp and fcc lattice?
These are two different names for the same lattice. so there is no difference between ccp and fcc.
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86.What percent of space is utilised by spheres in (i) simple cubic, (ii) face-centered cubic, (iii) body-centered cubic structure?
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87.If three elements A, B and C crystallize in a cubic solid lattic with A atom at the corner, B atoms at cube centre and C atoms at edges then what would be the formula of the solid?
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88.Out of Schottky and Frenkel defect which increases the dielectric constant of crystals?
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