Modern Publishing House has provided us this textbook for the BSc 3rd semester while three scholars as Dr. Neelam Malhotra, Ms. Raman Chadha, and Dr. Anterpreet Kuar have rightly collaborated giving the utmost significance to the syllabus given by the Panjab University, Chandigarh.

Basic Features of the Book:

• latest unsolved previous year question papers 
• the language has been kept easy with detailed explanations and numerous illustrations 
• introduces students to the microscopic realm of the atom 
• sufficient numerical exercises, short questions, multiple-choice questions have been provided for practice 
• unfolds the related concepts and theories in the most elementary manner, using a simple mathematical formalism 

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Content of the textbook:

1. Origin of the Quantum Mechanics 
2. Schrodinger's Theory of Quantum Mechanics 
3. Introductory Quantum Mechanics 
4. Quantum Theory of the Hydrogen Atom