Abhishek Sir's Chemistry Lecture

Introduction

• Welcome to Abhishek Sir's chemistry channel.
• Daily program for 16 days.
• Main topic: Solid State

Solid State

Question Format

• Three mark questions
  • Numerical
  • Theory
  • Combination

Key Points

• Reading the textbook is mandatory.
• Types of solids:
  • Crystalline: Regular arrangement, sharp melting point, true solids, anisotropy, long range.
  • Amorphous: Isotropic, examples: glass, plastic, rubber.

MCQs and Tricks

• Questions based on examples.
• Examples of crystalline solids: Ice, salt
• Examples of amorphous solids: Glass, plastic

Question Patterns

• How to solve questions with "not":
  • First find "not"
  • Then answer based on the relevant information

Other Important Topics

Isomers and Polymorphs

• Isomers: Same structure, different structural form
• Polymorphs: One substance, different structures

Chemical Bonding

• Four types of solids:
  • Ionic, covalent, metallic, molecular

Question Practice

• Questions based on examples like quartz, dry ice
• Questions on SCC, BCC, FCC

Density and Numerical

• Density formula: ( \rho = \frac{Z \times M}{a^3 \times N_A} )
• How to convert picometer to centimeter
• Four levels of numerical questions

Schottky Effect and Frenkel Effect

• Schottky: Missing equal numbers of positive and negative charges
• Frenkel: Cation leaves its place and moves to interstitial

Packing Efficiency

• Packing efficiency of SCC, BCC, FCC

In Conclusion

• Information on PDFs and mock tests
• Preparation for the next session

By reading these notes, you can easily remember all the important topics of solid state. Follow Abhishek Sir's guidance and move towards success.