Class 9 NCERT Science Structure of the Atom (Chemistry)
It contains:
- Explanatory videos
- Detailed Study Material
- Concept Maps and Essential Points
- Comprehensive Question bank in different formats like: - MCQ
- Solved NCERT questions
- Exclusive Exemplar questions with solutions
- Fill ups
- True/False
- Match the following
- Comprehension
- Assertion & Reasoning
- Solved examples
- VSA (Very Short Answer)
- SA (Short Answer)
- LA (Long Answer)
- Electrical Nature of Matter
- Charged Particles in Matter
- Discovery of Electron
- Origin of Cathode Rays
- Properties of Cathode Rays
- Characteristics of an Electron
- Discovery of Proton
- Origin of Anode Rays
- Properties of Anode Rays
- Charge and Mass of Particles Consisting Anode Ray
- Discovery of Neutron
- The Structure of an Atom
- Thomson's Model of an Atom
- Rutherford's Model of an Atom
- Main Features of Rutherford's Nuclear Model
- Drawbacks of Rutherford’s Model of the Atom
- Bohr's Model of Atom
- Atomic Number
- Mass Number
- Representation of Atomic Number and Mass Number with the Symbol of Element
- How to Determine the Number of Electrons, Protons and Neutrons in an Atom
- Electronic Configuration
- Distribution of Electrons in Different Shells (Orbits)
- Significance of Electronic Configuration
- Valency
- Valence Electrons
- Significance of Valence Electrons
- Combining Capacity or Valency of Elements
- Ions
- Cation
- Anion
- Isotopes
- Isotopes of Hydrogen
- Isotopes of Chlorine
- General Characteristics of Isotopes
- Applications of Isotopes
- Fractional Atomic Masses of Elements
- Isobars
- Isotones
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Explanatory Videos Study Material Concept Maps and Essential Points Question Bank Chapter-wise HOTS Solved NCERT Questions Solved Exemplar questions Downloadable Unit test paper