CHEM 112 Chapter Notes - Chapter 8.1-8.6: Louis De Broglie, Hydrogen Atom, Photon
Document Summary
A quantum of energy the difference between any two allowed energies of a system. Photons hit electrons and electrons absorb the energy and photoelectron is released. Light intensity is associated with number of photons arriving per time. Atomic emission spectra: visible light is said to be a continuous spectrum because light being dispersed consists of many wavelength components. If light only has a small number of wavelength components, then it is a discontinuous spectrum. The emitted light of an element (gas flame) has a distinct number of wavelength components observed as coloured lines and dark spaces between them. Electron moves about the nucleus with speed in one of a set circular orbital. When it stays in the orbital, no energy is emitted. An atom emits energy as a photon when an electron falls from orbit of a higher energy to a lower energy. Energy levels, spectrum and ionization energy of a hydrogen atom.
