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प्रश्न
Explain the following term with a suitable example:
Interstitials
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उत्तर
- When certain constituent particles, such as atoms or molecules, occupy interstitial positions, we refer to a crystal as having an interstitial defect.
- As shown in the figure, the presence of interstitial particles increases the substance’s density.
- Non-ionic solids exhibit interstitial flaws and vacancies.
- Ionic solids do not have simple vacancies or interstitial flaws as previously described because they must always maintain electrical neutrality.
- Rather, they display additional flaws referred to as Frenkel and Schottky faults.
- An example of interstitials is Carbon in Iron (Steel); Carbon atoms occupy interstitial sites in the iron lattice, making the metal stronger and harder.
संबंधित प्रश्न
Explain the following term with suitable examples:
Frenkel defect
What type of defect is shown by NaCl in
stoichiometric defects, and
Answer the following question.
What type of stoichiometric defect is shown by ZnS and why?
Defect shown by non-ionic solids is ____________.
Point defect is also known as ____________.
Dislocation defect is also known as ____________.
Type of stoichiometric defect shown by ZnS is ____________.
Schottky defect defines imperfection in the lattice structure of ____________.
Which of the following crystals does not exhibit Frenkel defect?
Silver halides generally show:
Schottky defect is observed in crystals when ______.
Which of the following point defects are shown by AgBr(s) crystals?
- Schottky defect
- Frenkel defect
- Metal excess defect
- Metal deficiency defect
Which of the following defects is also known as dislocation defect?
Match the defects given in Column I with the statements in given Column II.
| Column I | Column II |
| (i) Simple vacancy defect | (a) shown by non-ionic solids and increases density of the solid. |
| (ii) Simple interstitial defect | (b) shown by ionic solids and decreases density of the solid. |
| (iii) Frenkel defect | (c) shown by non ionic solids and density of the solid decreases. |
| (iv) Schottky defect | (d) shown by ionic solids and density of the solid remains the same. |
Schottky defect is noticed in ______
Given below are two statements:
Statements I: Frenkel defects are vacancy as well as interstitial defects.
Statements II: Frenkel defect leads of colour in ionic solids due to the presence of F-centers.
Choose the most appropriate answer for the statements from the options given below:
