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7 April, 09:50

Compounds of copper (II) are generally colored, but compounds of copper (I) are not. Explain. The electron configuration for is; the electron configuration for is. Color is a result of the electron transfer between orbitals. This cannot occur for the completely filled orbitals in

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  1. 7 April, 10:04
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    Answer: copper I ion has a completely filed d-orbital.

    Explanation:

    The electron configuration of copper is

    29Cu-[Ar] 3d10 4s1

    The formation of Cu + involves the loss of one 4s electron leaving a completely filled d subshell. Colour in transition metal complexes is generally attributed mostly to d-d transition. When bonded to ligands, the d-orbitals are no longer degenerate. They split into sets of orbitals depending on the nature of the crystal field. d-d transition is not possible when the d-orbitals are full hence Cu + compounds are not coloured.
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