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Why a solution of [Ni(H2O)5]2+ is green while a solution of [Ni(CN)4]2- is colourless? (At. No. of Ni = 28) |
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Answer» Unpaired electrons in [Ni(H2O6]2+/d-d transition. Detailed Answer: [Ni(CN)4]2- has no unpaired electron in its d-subshell therefore d-d transition is not possible whereas [Ni(H2O)6]2+ has unpaired electron in its d-subshell resulting in d-d transition imparting colour. |
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