AQA Jun 2013 Paper 5 Q6

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do not write outside the box this diagram represents the energy change that occurs when a d electron in a transition metal ion is excited by visible light e excited state ground state a give the equation that relates the energy change e to the planck constant h and the frequency of the visible light v use this equation and the information in the diagram to calculate a value for the frequency of the visible light and state the units the planck constant h j s equation calculation marks b explain why this electron transition causes a solution containing the transition metal ion to be coloured marks wmp jun chem do not write outside the box c the energy change shown in the diagram represents the energy of red light and leads to a solution that appears blue blue light has a higher frequency than red light suggest whether the energy change e will be bigger smaller or the same for a transition metal ion that forms a red solution explain your answer energy change explanation marks d state three different features of transition metal complexes that cause a change in the value of e the energy change between the ground state and the excited state of the d electrons feature feature feature marks turn over for the next question turn over wmp jun chem

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