Formula writing

Описание: Formula writing #class9#class10#youtubeshorts #trending #viral #chemistry#HafsaClasses
Learn Formula Writing in just 30 seconds!
Most important trick for Class 9 & 10 students to write chemical formulas quickly and correctly.
Perfect for board exam preparation — must watch!

📘 Topics covered:
• Valency method
• Crossing-over rule
• Common ions & radicals
• Easy examples for practice

🎯 Exam Tip: Mastering formula writing helps in Chemical Reactions, Balancing Equations, and Salts chapter.
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