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       #Post#: 2092--------------------------------------------------
       General knowledge question
   DIR By: Michel
       Date: February 11, 2013, 7:38 am
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       Why are compounds with many conjugate double bonds always highly
       colored?
       #Post#: 2095--------------------------------------------------
       Re: General knowledge question
   DIR By: Chemist@
       Date: February 11, 2013, 12:01 pm
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       A longer text would be needed to explain this well, but I like
       it short  :):
       many conjugate double bonds&#8594;bigger
       delocalization&#8594;stabilization&#8594;lower energy gap
       between HOMO and LUMO&#8594;less energy needed for the electron
       transition between these orbitals&#8594;the energy needed
       corresponds to the energy of a electromagnetic wave whose
       wavelength is inside the interval of the visible
       spectrum&#8594;one color gets absorbed and its complementary
       color is the color of the substance.
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