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When electrons are trapped into the crys...

When electrons are trapped into the crystalline anion vacancy the defect is known as

A

Schotky defect

B

Frenkel defect

C

Stoichiometric defect

D

F-centres

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Verified by Experts

The correct Answer is:
D
F-centres are the sites where anions are missing and instead electrons are present. they are responsible for colour.
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ERRORLESS-SOLID STATE-NCERT BASED QUESTIONS (DEFECTS IN CRYSTAL)
  1. Frenkel and Schottky defects are:

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  2. In a solid lattice the cation has left a lattice sirte and is located ...

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  3. When electrons are trapped into the crystalline anion vacancy the def...

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  4. Which of the following defects, if present, lowers the density of the ...

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  5. When anion leaves the normal lattice site and electron occupies inters...

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  6. which of the following is true about the change the charge acq...

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  7. Which of the following defects is also known as a dislocation defect?

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  8. Some polar crystals when heated produce small electrical current. The ...

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  9. With Which one of the following elements silicon should be doped so as...

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  10. Schottky defect occurs mainly in electrovalent compounds where

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  11. Zine oxide is white but it turns yellow on heating . Explain.

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  12. Frenkel defect generally appears in

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  13. The following is not a function of an impurity present in a crystal:

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  14. Point defects are present in .

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  15. If a non-metal is added to the interstitial sites of a metal, then the...

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  16. In AgBr crystal , the ion size lies in the order Ag^(+) lt lt Br^(-) T...

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  17. Which one of the following is the most correct statement?

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  18. The flame colours of metal ions are due to

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  19. Which one of the following crystal does not exhibit Frenkel defect?

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  20. Which of the following defect is seen in FeO

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