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Chemistry / Why are transition metal compounds brightly coloured?
« on: 03/05/2003 17:51:56 »
Transition metal compounds are coloured. Is the colour produced by excited electrons falling to a lower energy level?
From the example Pat said in the other topic: copper sulphate is originally a pale blue colour, once excess ammonia is added it becomes a rich dark blue. What cause the colour to become deeper? And how is electron get excited in the first place?
AG
From the example Pat said in the other topic: copper sulphate is originally a pale blue colour, once excess ammonia is added it becomes a rich dark blue. What cause the colour to become deeper? And how is electron get excited in the first place?
AG