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प्रश्न
Explain metal deficiency defect with examples.
उत्तर
Positive metal ions are missing from their original Lattice locations in some crystals. The existence of a cation of the same metal with a higher oxidation state than the missing cation balances the extra negative charge.
For Example: In NiO one Ni2+ ion is missing, creating a vacancy at its Lattice site. The deficiency of two positive charges is made up by the presence of two Ni3+ ions at the other Lattice sites of Ni2+ ions.
Nonstoichiometric Ni0.97O1.0
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संबंधित प्रश्न
Explain with diagram, the vacancy defect.
Give the classification of stoichiometric point defects.
What is a substitutional impurity defect?
Which of the following is an example of substitutional impurity defect?
When a cation or anion from ionic solid leaves its regular lattice site and moves to occupy an interstitial site, it is called as ____________.
Which of the following match is CORRECT?
(I) Frenkel defect: Electrical neutrality of the compound is preserved.
(II) Schottky defect: Density of the substance decreases.
(III) Schottky defect: Combination of vacancy defect and interstitial defect.
(IV) Frenkel defect: Small difference between size of cation and anion.
Which among the following statements is true about Schottky defect?
Which of the following pair of ionic crystals show Schottky defect?
Schottky defect in crystals is observed when ____________.
Which among the following defects is observed in Brass?
Schottky defect is formed in ionic compounds with ____________.
AgBr shows which type of defect?
Explain the following term:
Substitutional impurity defect
Explain the following term:
Interstitial impurity defect
Explain Self interstitial defect in elemental solid.
What is a crystal defect?
Explain the interstitial defect.
What is a vacancy defect?
Give the disadvantages of a vacancy defect.
What are point defects?
