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Atomic Structure and Atomic Model

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Discovery of Cathode Rays and Electrons   ✔

  • Assumptions of Dalton’s Atomic Theory
  • Discovery of Electrons
  • Characteristics of Cathode Rays
  • Charge to Mass Ratio
  • Millikan Experiment

Discovery of Protons and Neutrons  ✔

  • Origin of Positive Rays
  • Characteristics of Canal rays
  • Discovery of Proton
  • Characteristics of Proton
  • Discovery of Neutron
  • Characteristics of Neutron
  • Discovery of X-Rays
  • Characteristics of X-Rays
  • Contribution of Mosley

Cathode Rays ✔

  • Discharge Tube
  • Various Stages of Discharge
  • Characteristics of Cathode Rays
  • Uses of Cathode Rays

X- Rays   ✔

  • Discovery of X-Rays
  • Production of X-Rays
  • Characteristics of X-Rays
  • Uses of X-Rays

Radioactivity ✔

  • Characteristics of Natural Radioactivity
  • Characteristics of Alpha Particles
  • Characteristics of Beta Particles
  • Characteristics of Gamma Rays

Rutherford’s Model of an Atom ✔

  • Thomson’s Model of an atom
  • Rutherford’s Experiment
  • Rutherford’s Model of an Atom
  • Limitations of 
  • Rutherford’s Model of an Atom

Max Planck’s Quantum Theory ✔

  • Wave Nature of Radiations
  • Electromagnetic Nature of Radiations
  • Particle Nature of Radiations

Photoelectric Effect ✔

  • Introduction
  • Einstein’s Photoelectric Equation

Bohr’s Model of an atom  ✔

  • Postulates of Bohr’s Theory
  • Merits of Bohr’s Theory
  • Demerits of Bohr’s Theory

Dual Nature of Light and Matter  ✔

  • Heisenberg’s Uncertainty Principle
  • de Broglie’s Hypothesis
  • Significance of Heisenberg’s Uncertainty Principle
  • Schrodinger Wave Equation
  • Concept of Orbitals

Quantum Model of an Atom ✔

  • Principal Quantum Number
  • Concept of Quantum Numbers
  • Azimuthal Quantum Number
  • Magnetic Quantum Number
  • Spin  Quantum Number

Quantum Numbers and Shape of Orbitals

  • s orbital
  • p orbital
  • d orbital
  • f orbital

Electronic Configuration

  • Aufbau Principle and Diagram
  • Pauli’s Exclusion Principle
  • Hund’s Rule of Maximum Multiplicity
  • Stability of Completely and Exactly Half Filled Orbitals
  • Anamalous Electronic Configuration of Copper and Chromium
  • Electronic Configuration of First 30 Elements

Unit – III: Advanced Concept

Finding Charge, Specific Charge, Mass and Size of Electron

  • Milliken’s Oil Drop Experiment
  • Thomson’s Experiment to Find Specific Charge
  • To Find Mass of an electron
  • Size of Electron
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