CHEM 1030 Lecture Notes - Louis De Broglie, Niels Bohr, Rydberg Constant

• School: Auburn University
• Department: Chemistry
• Course: CHEM 1030
• Professor: Marla Spergel

Document Summary

Electromagnetic radiation: all electromagnetic radiation travels at the same velocity: the speed of light (c), 3. 00 108 m/s: therefore, c = . The nature of energy: max planck explained it by assuming that energy comes in packets called quanta, einstein used this assumption to explain the photoelectric effect, he concluded that energy is proportional to frequency: Where h is planck"s constant, 6. 626 10 34 j-s: therefore, if one knows the wavelength of light, one can calculate the energy in one photon, or packet, of that light: c = . E = h : for atoms and molecules one does not observe a continuous spectrum, as one gets from a white light source. Only a line spectrum of discrete wavelengths is observed: niels bohr adopted planck"s assumption and explained these phenomena in this way: Electrons in an atom can only occupy certain orbits (corresponding to certain energies).