Transition Elements - Colours and Formula 0.0 / 5 ? ChemistryTransition metalsA2/A-levelOCR Created by: missemmaceCreated on: 21-05-17 14:11 Manganate (VII) Purple. MnO4- 1 of 16 Manganese (II) Pale pink / colourless. [Mn(H2O)6]2+ 2 of 16 Copper (II) Blue. [Cu(H2O)6]2+ 3 of 16 Iron (II) Pale green. [Fe(H2O)6]2+ 4 of 16 Iron (III) Orange. [Fe(H2O)6]3+ 5 of 16 Dichromate Orange. Cr2O7 2- 6 of 16 Chromium (III) Violet / green. [Cr(H2O)6]3+ 7 of 16 Iron (II) hydroxide Green precipitate (orange top from oxidation). Fe(OH)2 8 of 16 Iron (III) hydroxide Orange precipitate. Fe(OH)3 9 of 16 Chromium (III) hydroxide Dark green. Cr(OH)3 10 of 16 Manganese (II) hydroxide Brown precipitate. Mn(OH)2 11 of 16 Copper (II) hydroxide Pale blue precipitate. Cu(OH)2 12 of 16 Complex ion Cu2+ and Cl- Yellow / green. [CuCl4]2- 13 of 16 Complex ion Cu2+ and edta4- Blue. [CuEDTA]2- 14 of 16 Complex ion Cu2+ and NH3 Dark blue. [Cu(H2O)2(NH3)4]2+ 15 of 16 Complex ion Cr3+ and NH3 Purple / pink. [Cr(NH3)6]3+ 16 of 16
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