Application of UV.pptx - Transition metals appear coloured...

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Transition metals appear coloured because they absorb visible light The d orbitals in a transition metal complex are split into two levels by the electric field created by the lone pair of electrons of the surrounding ligands. Consider for example an octahedral complex, [Cu(H2O)6]2+, with the water molecules placed along the x, y, and z axes. Cu2+ has an electron configuration with nine electrons in the five d orbitals. However,
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Unformatted text preview: these d orbitals are not all of the same energy in an octahedral electric field: an electron in either orbital orientated along the bond axis has higher energy than an electron in one of the three orbitals which point between the axis. Application of UV/Visible Spectroscopy...
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