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What are point defects?...

What are point defects?

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(i) If the deviation occurs due to missing atoms, displaced atoms the imperfection is names as a point defect.
(ii) Such defects arise due to imperfect packing during the original crystallisation or they may arise thermal vibrations of atoms at elevated temperatures.
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SURA PUBLICATION-SOLID STATE-ANSWER THE FOLLOWING QUESTIONS
  1. Distinguish tetrahedral and octahedral voids.

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  2. Distinguish tetrahedral and octahedral voids.

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  3. What are point defects?

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  4. Explain Schottky defect.

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  5. Write short note on metal excess and metal deficiency defect with an e...

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  6. Calculate the number of atoms in a fcc unit cell.

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  7. Explain AAAA and ABABA and ABCABC type of three dimensional packing wi...

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  8. Why ionic crystals are hard and brittle ?

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  9. Calculate the percentage efficiency of packing in case of body centere...

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  10. What is the two dimensional coordination number of a molecule in squar...

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  11. Experiment shows that Nickel oxide has the formula Ni(0.96) O(1.00).Wh...

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  12. What is meant by the term "coordination number "? What is the coorrdi...

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  13. An element has bcc structures with a cell edge of 288 pm. The density ...

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  14. Aluminium crystallizes in a cubic close packed structure .Its metallic...

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  15. If NaCl is doped with 10^(-2) mol percentage of strontium chloride , w...

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  16. KF crystallizes in fcc structure like sodium chloride. Calculate the d...

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  17. An atom crystallizes in fcc crystal lattice and has a density of10gcm^...

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  18. Atoms X and Y form bcc crystalline structure, Atom X is present at the...

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  19. Sodium metal crystallizes in bcc structure with the edge length of the...

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  20. Write a note on Frenkel defect.

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