Class 10 · Chemistry · Ch

Chemical Substances - Nature and Behaviour

Periodic Classification of Elements

25 board marks Moderate ~3h to learn

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6 concepts to cover

6 concepts

Dobereiner's triadsNewlands' law of octavesMendeleev's periodic table and its limitationsModern periodic lawPosition of elements in the modern periodic tableTrends: valency, atomic size, metallic character

Clear one concept (5-15 min)

Stuck on one topic? Watch a short explainer instead of a full lecture.

Dobereiner's triads

Newlands' law of octaves

Mendeleev's periodic table and its limitations

Modern periodic law

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