Select the following statement that is not related to the principles of Atomic Absorption Spectroscopy (AAS). A. specific frequencies of light are absorbed by different metals when they vaporize in a flame B. The amount of light absorbed is proportional to the concentration of the metal ion in the solution C. The electronic transition of valence shell electron in free atoms provide analytical information about the elemental composition of a sample D. The analysis does not require any standards of known concentration of analyte content to establish the relation between the measured absorbance and the analyte concentration
Electronic Transitions and Spectroscopy
The term “electronic” connotes electron, and the term “transition” implies transformation. In a molecule, the electrons move from a lower to a higher energy state due to excitation. The two energy states, the ground state and the excited state are the lowest and the highest energy states, respectively. An energy change is observed with this transition, which depicts the various data related to the molecule.
Photoelectron Spectroscopy
Photoelectron spectroscopy (PES) is a part of experimental chemistry. It is a technique used in laboratories that involves projecting intense beams of radiation on a sample element. In response, the element ejects electrons for which the relative energies are measured.
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