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How Schottky and Frenkel defects occur i...

How Schottky and Frenkel defects occur in ionic crystals? How does the density of a crystal gets affected by the presence of these defects ?

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Define Frenkel defect in solid crystal.

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Examiine the given defective crystal (i) What type of stoichiometric defect is shown by the the crystal ? (ii) How is the density of the crystal affected by this defect ? (iii) What type of ionic substance show such defect ?

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ICSE-SOLID STATE-EXERCISE (PART-II DESCRIPTIVE QUESTIONS) (LONG ANSWER QUESTIONS)
  1. Derive an expression for the density of a cubic crystal whose edge is ...

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  2. Show that the density of a cubic crystal is given by the expression: ...

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  3. How Schottky and Frenkel defects occur in ionic crystals? How does the...

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  4. How will you distinguish between ferromagnets, antiferromagnets and fe...

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  5. Discuss briefly the point defects in ionic crystals.

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  6. Discuss briefly the following property of solid : Magnetic propertie...

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  7. Discuss briefly the following property of solid : Electrical propert...

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  8. Discuss briefly the following property of solid : Dielectric propert...

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  9. Classify the crystals on the basis of nature of bonds existing between...

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  10. What are ionic crystals ? Discuss the crystal structure of sodium chlo...

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  11. Explain why ionic solids are quite hard and rigid.

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  12. Explain why ionic solids have high melting and boiling points.

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  13. Explain why ionic solids do not conduct electricity but are good condu...

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  14. Explain why ionic solids are more soluble in polar solvents.

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  15. Explain why solids have high density.

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  16. Explain why ionic solids are highly brittle.

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  17. What are atomic solids ? Discuss the structures of diamond and graphit...

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  18. Explain why the covalent solids have high melting and boiling points.

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  19. Explain why the covalent solids are hard.

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  20. Explain why the covalent solids are bad conductors of electricity.

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