Imperfections in Solids || The Solid State - 12 || Chemistry for Class 12 in Hindi

In this Chemistry video in Hindi for Class 12 we explained different imperfections or defects in crystalline solids. This is a topic from the chapter 'The Solid States' for Class 12th Chemistry.

In crystalline solids, constituent particles are arranged in a highly ordered repeating pattern.

Point defects are the irregularities or deviations from ideal arrangement around a point or an atom in a
crystalline substance, whereas the line defects are the irregularities or deviations from ideal arrangement in entire rows of lattice points.

Point defects can be classified into three types : (i) stoichiometric defects (ii) impurity defects and (iii) non-stoichiometric defects.

(a) Stoichiometric Defects : These are the point defects that do not disturb the stoichiometry of the solid. They are also called intrinsic or thermodynamic defects.
Following are the types of stoichiometric defects -
(i) Vacancy defects
(ii) Interstitial defects
(iii) Frenkel defect
(iv) Schottky defect

(b) Non-stoichiometric defects : These are the point defects that disturb the stoichiometry of the solid.
Following are the types of non-stoichiometric defects -
(i) Metal Excess Defect
(ii) Metal Deficiency Defect
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🔴 THE SOLID STATE - FULL CHAPTER 🔴 Class 12 - Chemistry
https://www.youtube.com/playlist?list=PLW0F47OesfFPAjU1Gn-IYExXLvNAeE7eR

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Previous videos :-

🔴 The Solid State
https://youtu.be/-SKpBwt7J8s

🔴 Types of Crystalline Solids
https://youtu.be/ojpwJbQX6KM

🔴 NON POLAR molecular solids and LONDON dispersion forces
https://youtu.be/bqlqK-uBW2E

🔴 Polar Molecular Solids and Hydrogen Bonded Molecular Solids
https://youtu.be/TdyFSxbqWK8

🔴 Ionic Solids
https://youtu.be/2k_qKS38cUs

🔴 Metallic Solids
https://youtu.be/U7mlKOuo7P4

🔴 Covalent or Network Solids
https://youtu.be/1j4uI9ko1ng

🔴 Unit Cell and Packing Efficiency
https://youtu.be/9SNP_LTfDLc

🔴 Calculations involving Unit Cell Dimensions
https://youtu.be/7launoj1MiA

🔴 Close Packed Structures
https://youtu.be/UXWK_slzVis

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