Solid State Part 8-Defects in Solids introduction- Plus two Chemistry in Malayalam

Any deviation from perfectly orderly arrangement of Constituent particles is known as defect. Point Defect& Line defect Point defect classified into 3: Stoichiometric, non stoichiometric &Impurity defect Stoichiometric classified into 4 Schottky& Frenkel defect- shown by ionic solids Vacancy & interstitial defects shown by non Ionic Solids Non stoichiometric defect : 2types Metal excess & metal deficiency Metal excess defect due to two reasons Anion vacancies & presence of extra cation