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Class 9 Chemistry

Class 9 · Chemistry · Ch 8

Matter - Its Nature and Behaviour

Journey Inside the Atom

25 board marks Moderate ~6h to learn
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8 concepts to cover

8 concepts

Electrons, protons, neutronsThomson's modelRutherford's alpha-scattering modelBohr's model and energy levelsElectron distribution (K, L, M, N) for first 18 elementsValencyAtomic number and mass numberIsotopes and isobars

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