CHM 151 Lecture Notes - Lecture 6: Werner Heisenberg, Photon, Nsb Di 2
Document Summary
Electronic structure: the arrangement of electrons in an atom. Much of our understanding of electronic structure of atoms has come from analysis of light emitted or absorbed by substances. Visible light is a form of electromagnetic radiation. Electromagnetic radiation shows properties that indicate it travels in waves. Wavelength, : distance per wave cycle; the distance between two adjacent peaks (or troughs). Frequency, : number of wave cycles that pass a given point per second. (s-1 , hertz, hz) . Amplitude: height of wave crests from baseline c = = 3. 00 108 m/s (you must know!!!) [q]: a sodium vapor streetlight emits light with a wavelength of 589 nm. E =n h n = 1, 2, 3, (whole number: max planck quantum. In 1900, max planck proposed that energy can be either released or absorbed by atoms in discrete values. Where, h = 6. 626 10-34 j s , planck"s constant: albert einstein photons, energy is quantized.
