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What coordination complex would have the least intense UV-VIS peak
Accepted Answer
A coordination complex with a large energy gap between its highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) would have the least intense UV-Vis peak. This is because the energy difference between these orbitals corresponds to the energy of light absorbed, and a larger energy gap requires higher energy (shorter wavelength) light for absorption. Consequently, the absorbance in the UV-Vis region would be weaker.
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