Chemical structure and light absorption

We can obtain the energy per mole by using Avogadros number N = 6.023 X 1023). 

Thus the calculated values for the lower limit of the visible region (380mn) is  

Carbon atoms Double bonds Structure Name Amax nm 

Note The electronic transition depends on the molecule and the orbitals occupied in the ground state, for detailed diagrams of bonding and electronic transitions for methanal and 1,3-butadiene see McDonald (1997) and Wong (1989). 

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Light Absorption by Chemical Species Molar Extinction Coefficients Illustrative Example 15.1 Determining Decadic Molar Extinction Coefficients of Organic Pollutants Chemical Structure and Light Absorption The Fate of Excited Chemical Species Quantum Yields... 

Let us now consider some aspects concerning the relationship between chemical structure and light absorption of organic compounds. We will confine ourselves to a few general remarks. For a more detailed discussion of this topic, we refer to the literature (Silverstein et al., 1991). 

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