Class 9 Chemistry New Book 2025 | Unit 2 | Atomic Structure | Lecture 5 | Isotopes and Their Masses

Welcome to Class 9 Chemistry New Book 2025! In Unit 2 (Atomic Structure) Lecture 5, we will discuss Isotopes and Their Masses in detail. This lecture includes:

✅ What are isotopes?
✅ Difference between atomic number, mass number, and isotopic mass
✅ Examples of isotopes (Hydrogen, Carbon, Uranium, etc.)
✅ How to calculate the relative atomic mass of an element

This video is based on the Punjab Textbook Board 2025 syllabus and is perfect for exam preparation. Watch till the end and boost your chemistry concepts!

📢 Don't forget to like, share, and subscribe for more educational content!


#Class9Chemistry #AtomicStructure #Isotopes #NewBook2025 #ScienceLecture #MatricChemistry #PunjabBoard #ExamPreparation