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What are F-centres ?...

What are F-centres ?

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In a face centred lattice of X and Y, X atoms are present at the corners while Y atoms are at face centres What is the formula of the compound?

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Explain the following terms with suitable examples: F-centres

Explain the following terms with suitable examples : F-centres (P.B.E.B. 2003)

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MODERN PUBLICATION-SOLID STATE-EXERCISE
  1. Explain the following terms Compound

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  2. The correct statement regarding defects in solids is

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  3. What are F-centres ?

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  4. From molecular view point, discuss the temperature dependence of susce...

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  5. Distinguish between conductor, insulator and semiconductor on the basi...

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  6. Why Frenkel defect does not change the density of AgCl crystal ?

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  7. Why does conductivity of a semiconductor increase with rise in tempera...

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  8. Describe the two main types of semiconductors.

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  9. Sodium crystallizes in i bcc unit cell. CaICulate the approximate no. ...

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  10. What are metal deficiency defects ?

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  11. Explain the metal excess defects due to extra cation in the interstiti...

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  12. What is crystal lattice or space lattice ? Give significance of lattic...

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  13. For a value of radius ratio between 0.732-1.0, what is the coordinatio...

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  14. What is the difference between ferromagnetic and paramagnetic substanc...

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  15. Tungsten crystallizes in a body centred cubic lattice. Calculate the n...

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  16. A unit cell of sodium chloride has four atoms units per unit cell. The...

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  17. Write two main differences between Schottky and Frenkel defect.

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  18. Number of atoms present per unit cell in NaCl

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  19. Calculate the density of NaCl if edge length of Nacl unit cell is 564 ...

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  20. What type of semiconductor is obtained when silicon is doped with boro...

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