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Topic 6 Ė Quantum Theory of the Atom

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WAVE NATURE OF LIGHT
Properties of waves as they relate to light
Wave
Wavelength
Frequency
Speed
Light as waves
Light is one form of electromagnetic radiation
Electromagnetic radiation
Examples
Finding wavelength
Finding frequency
FROM CLASSICAL PHYSICS TO QUANTUM THEORY
Planckís theory
The reason for its development
Planck proposals
Planckís quantum theory
The photoelectric effect
The photoelectric effect could not be explained by classical physics
Einsteinís use of Planckís theory to explain the photoelectric effect
The emission spectrum of hydrogen
The prediction of classical physics and Rutherfordís model of the atom 
The new model of the atom would use quantum theory
BOHRíS THEORY OF THE HYDROGEN ATOM
Bohrís Postulates
The electron moves in a circular orbit around the proton
Transitions of the electron occurs between specific energy states and involves the  emission or absorption of a photon of a specific energy and frequency
Bohrís explanation of the emission spectrum of hydrogen
Bohrís model completely explained the observed emission spectra of hydrogen
THE DUAL NATURE OF THE ELECTRON
The history of deBroglieís proposal
deBroglieís two proposals
Heisenbergís Uncertainty Principle
QUANTUM MECHANICS
Formulated by Ernst Schroedinger for the hydrogen atom
The Schroedinger equation incorporates both particle behavior and wave behavior
Solving the Schroedinger equation for a hydrogen atom 
Requires advanced calculus even for so simple a system
Produces a wave function y
Wave functions
Electron density
Orbitals
The many-electron atom
QUANTUM NUMBERS
The principal quantum number
The angular momentum quantum number
The magnetic quantum number
The spin quantum number