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AP Chemistry By Diane Paskowski 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 Bohr’s model did not work for atoms other than hydrogen Werner Heisenberg and Erwin Schrodinger developed quantum mechanics independently. Schrodinger ◦ Emphasized wave properties of the electrons ◦ Wave function Orbital is not an orbit Electron NOT moving around the nucleus DO NOT KNOW how it is moving 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. 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