Transition Metal Colours

The colours of transition metals

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  • Created by: Maddie
  • Created on: 07-06-10 08:18

Transition metal colours

  • Remember: Uncharged ions form a precipitate as they don't repel each other, so clump together. Charged ions repel each other, so form a solution.
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Iron (II) compounds

[Fe(H2O)6]2+ ,is a Pale Green Solution.

[Fe(H2O)4(OH)2] ,is a Green Precipitate. This oxidises in air to a brown precipitate.

FeCO3 ,is a Green precipitate.

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Cobalt (II) compounds

[Co(H2O)6]2+ ,is a Rose Pink Solution.

[Co(H2O)4(OH)2] ,is a Blue-Green precipitate.

[Co(NH3)6]2+ ,is a Pale yellow (straw) solution.

CoCO3 ,is a Lilac Precipitate.

[CoCl4]2- ,is a Blue Solution.

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Copper (II) Compounds

[Cu(H2O)6]2+ ,is a Blue Solution.

[Cu(H2O)4(OH)2] ,is a Blue precipitate.

CuCO3 ,is a Green Precipitate.

[Cu(NH3)4(H2O)2]2+ ,is a Deep Blue Solution.

[CuCl4]2- ,is a Yellow Green Solution.

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Chromium (III) Compounds

[Cr(H2O)6]3+ ,is a Ruby/Green solution.

[Cr(H2O)3(OH)3] ,is a Green precipitate.

[Cr(H2O)2(OH)4]- ,is a Green Solution.

CrO4 2- ,is a yellow solution.

Cr2O7 2- ,is an orange solution.

[Cr(NH3)6]3+ ,is a Purple Solution.

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Fe (III) Compounds

[Fe(H2O)6]3+ ,is a very pale violet solution.

[Fe(H2O)5(OH)]2+, is a Yellow Brown Solution.

[Fe(H2O)3(OH)3] ,is a red brown precipitate.

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Aluminium (III) Compounds

[Al(H2O)6]3+ ,is a colourless solution.

[Al(H2O)3(OH)3], is a white precipitate.

[Al(H2O)2(OH)4]- , is a colourless solution.

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Thank you :)


it was really good, thanx :D


First card was mind blowing, can't believe my teacher didn't tell me that!

Much thanks.

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