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What are Frenkel defects ? Discuss...

What are Frenkel defects ? Discuss

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Frenkel defects were discovered by Russian scientist Frenkel. These defects arise when certain

ions leave their nonnal positions and occupy interstitial sites. Holes are created at the leaving position. For example, AgCl, AgI etc.
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Ionic lattic has two major points defects ,(1) Schottky (2) Frenkel defects . Schottkly defects occurs due to the cations - anion pair's missing from the lattice sites . Frenkel defects occurs when smaller ion leaves from its lattic site and fits into an intersitial space.which defect decrease density of the crystal ?

Ionic lattic has two major points defects ,(1) Schottky (2) Frenkel defects . Schottkly defects occurs due to the cations - anion pair's missing from the lattice sites . Frenkel defects occurs levels its lattic site and fits into an intersitial space. The neturaity of the crystal is benig maintained and we considerd all losses from interstitical positions. Structure shown here represents :

Ionic lattic has two major points defects ,(1) Schottky (2) Frenkel defects . Schottkly defects occurs due to the cations - anion pair's missing from the lattice sites . Frenkel defects occurs levels its lattic site and fits into an intersitial space. The neturaity of the crystal is benig maintained and we considerd all losses from interstitical positions. Structure shown here represents :

OMEGA PUBLICATION-THE SOLID STATE-MULTIPLE CHOICE QUESTIONS
  1. What are Frenkel defects ? Discuss

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  2. The major binding force of diamond , silicon and quartz is

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  3. Graphite is an example of:

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  4. The total number of lattice arrangements in different crystal system i...

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  5. Which one of the following will have a low heat of fusion ?

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  6. The crystal system of a compound with unit cell parameter,

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  7. Zn converts its melting state to its solid state, it has hcp structure...

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  8. A metallic crystal crystallises into a lattice containing sequence ofl...

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  9. The cordination number of a metal crystallising in a hexagonal close-p...

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  10. The packing fraction for a body centred cube is

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  11. In crystal structure of sodium chloride, the arrangement of Cl ions is

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  12. The percentage of nitrogen in HNO3 is ...................................

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  13. The number of octahedral sites per sphere in fcc structure is

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  14. The number of tetrahedral sites per sphere in fcc structure is

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  15. A crystal lattice with alternate +ve and-ve ions has radius ratio of 0...

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  16. Calculate the equivalent weight of oxalic acid

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  17. Which of the following is Bragg's equation?

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  18. 74.5g of metal chloride contains 35.5g of chlorine. the equivalent wei...

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  19. Name the element with electronic configuration 1s2 2s2

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  20. The units of molality are ...........

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  21. How many gram of oxygen is required to completely react with 0.200g of...

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