Spectroscopy. Atoms and Light. Atomic electron energy levels are a source of discrete photon energies. Change from a high to low energy state produces a photon. Atoms can also absorb a photon to excite an electron. Discrete Spectrum. Each atom has its own set of energy levels.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Energy states in molecules contribute to stellar spectra.
Internuclear distances are quantized in discrete states.
Angular momentum for the molecule is quantized.
Atoms and molecules can reemit absorbed energy.
Fluorescence typically involves three steps.
Excitation to higher energy state.
Loss of energy through change in vibrational state
Emission of fluorescent photon.