Atom and Molecules- CBSE Class 9 Science SA2 Video Lecture (Hindi)




Topics covered
Ions, Valancy- Valancy of Cations, Valancy of Anions; Polyatomic Ions; Writing the formulae of Compounds;Mole Concept- Molar Mass;Calculation of no. of Moles from no. of Particles; Percentage of an Element in a Compound; Laws of Chemical Combination- Law of Conservation of Mass, Law of Constant Proportion;.

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