Скачать или смотреть Lec 04 Chemical Formula of Binary Ionic Compound| Ch 04 Stoichiometry| Chem Class 9th New Book 2025

📚 Welcome to Lecture 04 – Chemical Formula of Binary Ionic Compounds
In this video, we cover a key concept from Chapter 04: Stoichiometry of 9th Class Chemistry (New Book 2025) as per Punjab Textbook Board and other boards like FBISE, KPK Board, and Sindh Board.

You will learn:
✅ What are binary ionic compounds?
✅ How to write their chemical formulas using the Criss-Cross Method
✅ Important rules for naming and writing formulas
✅ Examples and full explanation in Urdu + scientific terms
✅ Perfect for board exam preparation and concept clarity

This lecture is ideal for students of Science Group (Urdu Medium/English Medium) who want to understand Chemical Formula Writing in a simple and easy way.

🎯 STUDIES WITH UMAR aims to provide complete Chemistry preparation for Matric (Class 9 & 10) and Intermediate (Class 11 & 12) students. Our lectures follow the New Book 2025 Syllabus with Urdu explanation for better understanding.

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