Structure of Atom Class 9 | NCERT Science Chapter 4 | Easy Explanation Part- 4

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Dalton’s Atomic Theory
• J.J. Thomson’s Model of Atom
• Rutherford’s Nuclear Model of Atom
• Bohr’s Model of Atom
• Neutrons Discovery (Chadwick)
• Atomic Number, Mass Number & Valency
• Isotopes and Isobars