Test tubes of copper complex ions. The ions of transition metals are coloured. This makes it possible to tell which ion is present in a solution. From

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Test tubes of copper complex ions. The ions of transition metals are coloured. This makes it possible to tell which ion is present in a solution. From left to right: The copper/chloride ion is yellow because most the absorption band is in the ultraviolet part of the spectrum - 390nm. The copper/1, 2 diaminoethane (ethylenediamine) ion is purple because the absorption band is in the green part of the spectrum - 530nm. The copper/ammonia ion is dark blue because most the absorption band is in the red part of the spectrum - 620nm. The hydrated copper ion is pale blue because most of the absorption band is in the infrared part of the spectrum - 800nm.

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Size: 6000px × 3453px
Photo credit: © MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, 1-2, 2, absorption, band, coloured, complex, copper, copper/ammonia, copper/chloride, copper/en, diaminoethane, en, ethylenediamine, hydrated, ion, ions, ligand, metals, solution, spectrum, transition