Click on the below links to download notes of each unit:

 Unit 1: Periodic Table

 Unit 2: Periodicity

 Unit 3: Hydrogen

 Please note that these are the units that come under Atomic & Molecular Structure. You don't have to study all the chapters. Only study chapters that are in your syllabus.

For your syllabus, you can visit your university!

Disclaimer: The study material provided on this website is taken from the eGyankosh official website. Here's how you can download free study material from IGNOU: How to Download IGNOU Study Material?