For the polyenes (17.28), observed longest-wavelength electronic absorption bands are at 162.5, 217, 268, 304, 334, 364,

Question:

For the polyenes (17.28), observed longest-wavelength electronic absorption bands are at 162.5, 217, 268, 304, 334, 364, 390, 410, and 447 nm for s = 0, 1, 2, 3, 4, 5, 6, 7, and 9, respectively. Compare these values with those given by the Hückel equation (17.31) and calculate the average absolute percent error.