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Name the ions which form the close-packe...

Name the ions which form the close-packed structure (along with the type of packing) and the ions which fill the voids (along with the types of voids ) in the compounds : (i)NaCl (ii)ZnS (iii)`CaF_2`

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PRADEEP-STATES OF MATTER: SOLID MATTER-ADDITIONAL QUESTIONS ( SHORT ANSWER )
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  2. Calculate the packing efficiency of a metal crystal for a simple cubic...

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  3. Name the ions which form the close-packed structure (along with the ty...

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  4. Explain what happens to the structure of CsCl when (i)it is heated to ...

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  5. Draw the structure of NaCl and represent the coordination numbers of N...

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  6. Draw the structure of CsCl and represent the coordination numbers of C...

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  7. What is the difference in the structures of zinc blende and wurtzite ?

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  8. Define radius-ratio . What is the coordination number if the radius ra...

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  9. Define radius ratio. What is the value of radius ratio for octahedral ...

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  10. For a face-centred cubic crystal of an element , prove that radius (r)...

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  11. For a body-centred cubic, crystal of an element , derive the relations...

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  12. Derive an expression for the calculation of density of the cubic cryst...

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  13. Explain how can you determine the atomic mass of an unknown metal if y...

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  14. What are point defects ? Describe Schottky defects in crystals.

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  15. Write the difference between Frenkel and Schottky defects.

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  16. Frenkel and Schottky defects are:

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  17. What are interstitials ? Explain with suitable examples

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  18. Briefly explain what you understand by 'F-centre' ?

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  19. Pure silicon is an insulator . Silicon doped with phosphorus is a semi...

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  20. Explain Schottky defect in Stoichiometric crystals. What are the conse...

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