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Missing of one positive ion and one nega...

Missing of one positive ion and one negative ion from the crystal lattice is called

A

Frenkel defect

B

Schottky defect

C

Point defect

D

Ionic defect

Text Solution

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Missing of positive and negative. ions from crystal lattice_ is called schoty defect
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A spinel is an important class of oxide consisting two types of metal ions with the oxide ions arranged in ccp layers . The normal spinel has one -eight of the tetrahedral holes occupied by one type of metal ions and one- half of the octahedral holes occupied by another type of metal ion. Such a spinel is formed by Mg^(2+), Al^(3+) and O^(2-) . The neutrality of the crystal is being maintained. The formula of the spinel is :

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 :

A spinel is an important class of oxide consisting two types of metal ions withs the oxide ions arranged in ccp layers . The normal spinel has one -eight of the tetrahendral holes occupied by one type of metal ions and one- half of the octaherdral holes occupied by another type of metal ion. Such a spine is formed by Mg^(2+), Al^(3+) and O^(2-) . The netutrality of the crystal is benig maintained. Type of hole occupied by Al^(3+) ions is:

OMEGA PUBLICATION-THE SOLID STATE-MULTIPLE CHOICE QUESTIONS
  1. In a solid lattice the cation has left a lattice site and is located a...

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  2. Which of the following is a pseudo solid?

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  3. Missing of one positive ion and one negative ion from the crystal latt...

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  4. If edge of a bcc crystal of an element is a cm, number, then density o...

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  5. Amorphous solids

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  6. The number of atoms present in a fcc unit cell is

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  7. If the alignment of mangnetic moments in a substance is 'in-a compensa...

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  8. The number of atoms in bcc arrangement is

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  9. The fraction of volume occupied by atoms in a primitive cubic unit cel...

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  10. Volume occupied in f. c. c. is :

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  11. The conductivity of metals increases with:

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  12. What is radius ratio for the co-ordination number 8

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  13. Close packing is maximum in the crystal which is

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  14. In a solid lattice the cation has left a lattice site and is located a...

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

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  16. The amorphous solid among the following is

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  17. What is the coordination number of atoms. In a cubic close packed st...

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  18. When unpaired electron is trapped in anion vacancy, then crystal with ...

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  19. Which of the following is a molecular solid?

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  20. The empty space within hcp arrangement is

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