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प्रश्न
Give the classification of stoichiometric point defects.
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उत्तर
The chemical formula of a compound shows fixed ratio of a number of atoms or the number of cations and anions. This fixed ratio is the stoichiometry of the compound.
In stoichiometric defect, the stoichiometry remains unchanged. In other words, the ratio of a number of atoms or number of cations and anions of compound remains the same as represented by its chemical formula.
There are four types of stoichiometric point defects:
- vacancy defect
- self interstitial defect
- Schottky defect and
- Frenkel defect
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संबंधित प्रश्न
What are the consequences of the Schottky defect in crystals?
What is an impurity defect? What are its types? Explain the formation of vacancies through aliovalent impurity with example.
What is a substitutional impurity defect?
Explain solid solutions of metals and vacancy through aliovalent cations.
Which among the following solids shows Frenkel defect?
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?
Write the consequences of Schottky defect with reasons.
Explain metal deficiency defect with examples.
AgBr shows which type of defect?
Name a compound where Frenkel defect is found.
In which among the following solids, Schottky defect is not observed?
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 are point defects?
