OCR A Level Chemistry Transition metal colours

OCR A Level Chemistry Transition metal colours [Cu(H2O)6]2+ Pale blue Solution [Fe(H2O)6]2+ Pale green solution [Fe(H2O)6]3+ Yellow Solution [Mn(H2O)6]2+ Pale Pink Solution [Cr(H2O)6]3+ Pale Purple Solution Cu(OH)2 Pale Blue PPT Fe(OH)2 Green PPT which darkens on standing Fe(OH)3 Orange Brown PPT Mn(OH)2 Light brown PPT which darkens on standing Cr(OH)3 Grey-green PPT [Cr(OH)6]3- Dark green solution Cr2O7 2- Orange solution [Cu(NH3)4(H2O)2]2+ Dark blue solution [CuCl4]2- Yellow solution [Cr(NH3)6]3+ Purple solution I2(aq) Brown solution CrO4 2- Yellow solution AgI Yellow PPT does not dissolve in CONC NH3 AgBr Cream PPT dissolves in CONC NH3 AgCl White PPT dissolves in dilute NH3 Permanganate ion MnO4- Dichromate ion Cr2O7 2- Chromate ion CrO4 2- MnO4- and Fe2+ colour change Purple to pale pink MnO4- and Fe2+ products Mn2+ and Fe3+