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First 20 Elements of Periodic Table | Valency, Symbols & Atomic Masses | Chemistry #periodictable
This shows a clear and simple table of the first 20 elements of the periodic table, including their names, symbols, atomic valency, and atomic masses. It is specially helpful for: • MDCAT students • Board exams (9th, 10th, 11th, 12th) • Chemistry beginners • Quick revision and memorization 📘 Elements covered: Hydrogen to Calcium (H ...
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