Скачать или смотреть L-9. Calculation of Atomic Number and Mass Number | 9th Chemistry Chapter 2 | Prof. Majid Ali

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

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Описание к видео L-9. Calculation of Atomic Number and Mass Number | 9th Chemistry Chapter 2 | Prof. Majid Ali

📘 Topic: Calculation of Atomic Number and Mass Number
📚 Subject: 9th Class Chemistry - Chapter 2
🎓 Teacher: Prof. Majid Ali (Gold Medalist)

In this detailed and easy-to-understand chemistry lecture, Prof. Majid Ali explains how to calculate the atomic number, mass number, and number of subatomic particles (protons, neutrons, electrons) of various elements like Barium, Uranium, Platinum, Manganese, and Phosphorus. The lecture is based on Chapter 2 of 9th Class Chemistry and aligns perfectly with the Punjab Board syllabus.

📌 What You Will Learn in This Video:
• How to identify atomic number and mass number
• Formula to calculate number of neutrons: N = A - Z
• Solved examples of real elements from periodic table
• Concept of subatomic particles in atoms
• Atomic structure basics for class 9

This video is perfect for board exam preparation, concept building, and competitive test practice.

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