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In two dimensions, which one represents ...

In two dimensions, which one represents the close-packed structure of spheres with highest packing efficiency, a square close-packing or a hexagonal close-packing? Explain in it terms of coordination number of sphere in each case.

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CHHAYA PUBLICATION-SOLID STATE-WARM UP EXERCISE
  1. A cubic unit cell with an edge length of a cm consists of identical pa...

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  2. What do you mean by coordination number of a constituent particle in a...

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  3. In two dimensions, which one represents the close-packed structure of ...

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  4. Which close-packed structure is represented by ABAB… arrangement, and ...

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  5. What are hcp and ccp structures? What are their unit cells? In what wa...

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  6. What are tetrahedral and octahedral voids in a close-packed structure ...

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  7. In a crystalline compound AB, B atoms form hexagonal close-packed stru...

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  8. The crystal lattice of the compound M(x)O(y) has cubic close-packed ar...

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  9. The crystal structure of a compound consisting of atoms M and N shows ...

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  10. Nickel (density = 8.9g*cm^(-3), atomic mass = 58.7g*mol^(-1)) crystall...

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  11. What do you mean by defect in a crystal? What are point defects in a c...

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  12. What are vacancy and interstitial defects? How do these defects affect...

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  13. What is Schottky defect? Is it a stoichiometric or non-stoichiometric ...

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  14. What is Frenkel defect? What type of ionic solids are likely to develo...

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  15. What type of stoichiometric defect are shown by the following compound...

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  16. What are non-stoichiometric defects in an ionic crystal? Explain how m...

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  17. What is F-centre? Why is it called colour centre? What kind of defect ...

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  18. Why does the colour of NaCl turn yellow when it is heated in an atmosp...

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  19. How are vacancies created in the crystal lattice of NaCl when a small ...

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  20. What will be the number of cation vacancies if 10^(-3) mol% of CdCl(2)...

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