9th Chemistry Chapter 2 Lecture 7 | Atomic Number & Mass Number | Class 9 Chemistry 2025

In this lecture of 9th Class Chemistry Chapter 2 (Atomic Structure), we will learn about Atomic Number and Mass Number in an easy and conceptual way according to the Punjab Board New Book 2025.

📘 Topics Covered:

What is Atomic Number?
What is Mass Number?
Difference between Atomic Number and Mass Number
Number of Protons, Neutrons and Electrons
Examples and Numerical Problems
Important MCQs and Board Questions

✨ Features of this Lecture:

Easy Urdu explanation
Board exam focused preparation
Concept based learning
Solved examples
Important notes for exams

🎯 Best for:

9th Class Students
Punjab Board Students
School Exams
Board Preparation 2025

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Видео 9th Chemistry Chapter 2 Lecture 7 | Atomic Number & Mass Number | Class 9 Chemistry 2025 канала Dr Asif Ali Math Lectures