Question: a) In solid-state physics a common model for describing the wavefunction of solids is the tight binding model. Compare the approach of the Hckel theory

a) In solid-state physics a common model for describing the wavefunction of solids is the "tight binding" model. Compare the approach of the Hckel theory with the approach of the "tight binding" model. b) Calculate the relative energy difference between the HOMO and LUMO of Butadiene using the Hckel method. The energy scale can be approximated by 75kJ/mol or 2.8eV for a single Butadiene molecule. Determine the central wavelength of the main absorption peak of Butadiene

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