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Question
What are point defects?
Solution
If the deviation occurs due to missing atoms, displaced atoms or extra atoms the imperfection is named as a point defect. Such defects arise due to imperfect packing during the original crystallisation or they may arise from thermal vibrations of atoms at elevated temperatures.
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RELATED QUESTIONS
Schottky defect in a crystal is observed when
The cation leaves its normal position in the crystal and moves to some interstitial position, the defect in the crystal is known as ____________.
Assertion: due to Frenkel defect, density of the crystalline solid decreases.
Reason: in Frenkel defect cation and anion leaves the crystal.
The crystal with a metal deficiency defect is ____________.
Explain Schottky defect.
Write short note on metal excess and metal deficiency defect with an example.
Write a note on Frenkel defect.
