The UV-VIS spectrum of a CH₃CN solution (2.0 × 10⁻⁵ mol dm⁻³) of an iron(II) complex is: λ_max(ε) = 245 (48 200), 276 (74 100), 284 (81 700), 324 (45 100), 569 nm (25 000 dm³ mol⁻¹ cm⁻¹). A quartz cuvette with path length 1 cm was used for the measurement. 

(a) Explain why the compound is coloured. What colour do you expect the compound to be? 

(b) Which is the lowest energy absorption? Rationalize your answer. 

(c) The initial data were recorded as a plot of absorbance against wavelength. What was the value of A_max for the band at 245 nm?