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The crystal with metal deficiency defect...

The crystal with metal deficiency defect is:

A

NaCl

B

FeO

C

KCl

D

ZnO

Text Solution

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The correct Answer is:
B
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In an ideal crystal, the entropy of the constituents at absolute zero temperature (0K) is zero. However, the crystals generally suffer from certain defects also called imperfections They may be both electronic and atomic in nature. The atomic imperfections may be stoichiometric (Schottky and Frenkel defects) or non-stoichiometric (metal excees and metal deficiency defects). In addition to these, there are impurity defects which are caused by the addition of certain impurities of metals and this is known as dopping. The dopping leads to semi conductors which may be either n-type or p-type in nature. In stoichiometric defects, the ratio of positive and negative ions as indicated by chemical formula of the compound:

In an ideal crystal, the entropy of the constituents at absolute zero temperature (0K) is zero. However, the crystals generally suffer from certain defects also called imperfections They may be both electronic and atomic in nature. The atomic imperfections may be stoichiometric (Schottky and Frenkel defects) or non-stoichiometric (metal excees and metal deficiency defects). In addition to these, there are impurity defects which are caused by the addition of certain impurities of metals and this is known as dopping. The dopping leads to semi conductors which may be either n-type or p-type in nature. Which of the following is correct ?

In an ideal crystal, the entropy of the constituents at absolute zero temperature (0K) is zero. However, the crystals generally suffer from certain defects also called imperfections They may be both electronic and atomic in nature. The atomic imperfections may be stoichiometric (Schottky and Frenkel defects) or non-stoichiometric (metal excees and metal deficiency defects). In addition to these, there are impurity defects which are caused by the addition of certain impurities of metals and this is known as dopping. The dopping leads to semi conductors which may be either n-type or p-type in nature. Silicon doped with arsenic is

In an ideal crystal, the entropy of the constituents at absolute zero temperature (0K) is zero. However, the crystals generally suffer from certain defects also called imperfections They may be both electronic and atomic in nature. The atomic imperfections may be stoichiometric (Schottky and Frenkel defects) or non-stoichiometric (metal excees and metal deficiency defects). In addition to these, there are impurity defects which are caused by the addition of certain impurities of metals and this is known as dopping. The dopping leads to semi conductors which may be either n-type or p-type in nature. Zinc oxide (ZnO) is white when cold and yellow when hot. It is due to the development of :

In an ideal crystal, the entropy of the constituents at absolute zero temperature (0K) is zero. However, the crystals generally suffer from certain defects also called imperfections They may be both electronic and atomic in nature. The atomic imperfections may be stoichiometric (Schottky and Frenkel defects) or non-stoichiometric (metal excees and metal deficiency defects). In addition to these, there are impurity defects which are caused by the addition of certain impurities of metals and this is known as dopping. The dopping leads to semi conductors which may be either n-type or p-type in nature. Which is the correct statement regarding F-centres ?

DINESH PUBLICATION-SOLID STATE-Select the correct
  1. Copper crystallises in fcc with a unit cell length of 361 pm. What is ...

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  2. The edge length of a face centred cubic cell of an ionic substance is ...

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  3. The crystal with metal deficiency defect is:

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  4. The relation between atomic radius and edge length 'a' of a body centr...

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  5. In a face centred cubic lattice, atom A occupies the corner positions ...

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  6. Lithium forms body centred cube structure .The length of the side of i...

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  7. In a face centred cubic lattice unit cell is shared equally by how man...

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  8. Which of the following metals has different geometry compared to those...

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  9. Which of the following defects is present in KCl crystals ?

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  10. CsCl crystallizes in body centred cubic lattice .If 'a' is its edge le...

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  11. A crystalline solid XY(3) has ccp arrangement for its element Y. The e...

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  12. In a crystalline solid, having formula AB(2)O(4) oxide ions are arrang...

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  13. Sodium metal crystllizes in a body centred cubic lattice with a unit c...

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  14. The unit cell with crystallographic dimensions, a ne b ne c, alpha =ga...

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  15. Pure silicon doped with phosphorus is:

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  16. An example of covalent solid is:

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  17. Suppose the mass of a single Ag atoms is 'm' Ag metal crystallises in ...

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  18. A metal oxide has empirical formula M(0.96)O(1.00) What will be the pe...

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  19. An element crystallising in body centred cublic lattice has edge lengt...

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  20. The contibution of the particle present at the edge centre of a partic...

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