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The rich diversity of chemical behaviour of different elements can be traced to the differences in the internal structure of atoms ...

STRUCTURE OF ATOM



The rich diversity of chemical behaviour of different elements can be traced to the differences in the internal structure of atoms of these elements.




2.1 DISCOVERY OF SUB-ATOMIC PARTICLES2.1.1 Discovery of Electron
2.1.2 Charge to Mass Ratio of Electron
2.1.3 Charge on the Electron
2.1.4 Discovery of Protons and Neutrons

2.2 ATOMIC MODELS2.2.1 Thomson Model of Atom
2.2.2 Rutherford’s Nuclear Model of Atom
2.2.3 Atomic Number and Mass Number
2.2.4 Isobars and Isotopes
2.2.5 Drawbacks of Rutherford Model

2.3 DEVELOPMENTS LEADING TO THE BOHR’S MODEL OF ATOM2.3.1 Wave Nature of Electromagnetic Radiation
2.3.2 Particle Nature of Electromagnetic Radiation: Planck’s Quantum Theory
Photoelectric Effect
Dual Behaviour of Electromagnetic Radiation
2.3.3 Evidence for the quantized* Electronic Energy Levels: Atomic spectra

Emission and Absorption Spectra
Line Spectrum of Hydrogen

2.4 BOHR’S MODEL FOR HYDROGEN ATOM2.4.1 Explanation of Line Spectrum of Hydrogen
2.4.2 Limitations of Bohr’s Model

2.5 TOWARDS QUANTUM MECHANICAL MODEL OF THE ATOM2.5.1 Dual Behaviour of Matter
2.5.2 Heisenberg’s Uncertainty Principle
Significance of Uncertainty Principle
Reasons for the Failure of the Bohr Model

2.6 QUANTUM MECHANICAL MODEL OF ATOMHydrogen Atom and the Schrödinger Equation
2.6.1 Orbitals and Quantum Numbers
2.6.2 Shapes of Atomic Orbitals
2.6.3 Energies of Orbitals
2.6.4 Filling of Orbitals in Atom
Aufbau Principle
Pauli Exclusion Principle
Hund’s Rule of Maximum Multiplicity
2.6.5 Electronic Configuration of Atoms
2.6.6 Stability of Completely Filled and Half Filled Subshells





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