L-8. Atomic Number and Mass Number | 9th Class Chemistry Chapter 2 | Prof. Majid Ali

YouTube Description (SEO Friendly & Algorithm Optimized): 📚 Understand the core concepts of Atomic Number and Mass Number in this comprehensive video lecture from Chapter 2 of 9th Class Chemistry. Prof. Majid Ali (Gold Medalist) explains the fundamentals of atoms, protons, neutrons, and electrons in a way that’s easy to understand and 100% aligned with the Punjab Board and other Matric Boards of Pakistan. ⸻ 📌 What You’ll Learn in This Lecture: • What is Atomic Number (Z)? • What is Mass Number (A)? • Difference between protons, neutrons, and electrons • Relationship between atomic number and element identity • How to calculate number of neutrons using: N = A - Z • Symbol representation of elements like Oxygen (₈¹⁶O) and Carbon (₆¹²C) • Importance of fundamental particles in element identification • Relevance in periodic table positioning This video is perfect for board exam preparation, concept clarity, and competitive exam readiness. ⸻ 👨‍🏫 Teacher: Prof. Majid ALI (Gold Medalist) 📺 Watch All Lectures Here: 🔗    / @mjdchemistry9241   📝 Get Free Notes, Tests & Past Papers: 🌐 www.mjdexpert.com 📱 Follow Us for More Educational Content: 👍 Facebook: facebook.com/MJD-chemistry-105246878387224 📸 Instagram: instagram.com/majidali3719 📲 Join Our WhatsApp Communities: • 🔗 WhatsApp Channel: https://whatsapp.com/channel/0029Vb5o... • 💬 MJD WhatsApp Community: https://chat.whatsapp.com/FojjOnkK8fn... • 👥 MJD WhatsApp Group: https://chat.whatsapp.com/JhSlFdSqop3...