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Development of Quantum Mechanics Waves

Development of Quantum Mechanics Waves. AP Chemistry By Diane Paskowski. DeBroglie’s Question. If light is a wave with particle properties, are electrons particles with wave properties?

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Development of Quantum Mechanics Waves

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  1. Development of Quantum MechanicsWaves AP Chemistry By Diane Paskowski

  2. DeBroglie’s Question • If light is a wave with particle properties, are electrons particles with wave properties? • C. J. Davisson and L. H. Germier at Bell labs proved that electrons produce diffraction patterns and verified deBroglies hypothesis

  3. What could they do next? • Bohr’s model did not work for atoms other than hydrogen • Werner Heisenberg and Erwin Schrodinger developed quantum mechanics independently.

  4. Wave Mechanics/Quantum Mechanics • Schrodinger • Emphasized wave properties of the electrons • Wave function

  5. Figure 7.10 The Hydrogen Electron Visualized as a Standing Wave Around the Nucleus

  6. Most Important Ideas • Orbital is not an orbit • Electron NOT moving around the nucleus • DO NOT KNOW how it is moving

  7. Probably Heisenberg • Heisenberg Uncertainty Principle • There is a fundamental limitation to just how precisely we can know both the position and momentum of a particle at a given time.

  8. What does it all mean? • Wave function has no easily visualized physical meaning • Square of the function indicates the probability of finding an electron near a particular point in space • Probabilty distribution defines the orbital

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