1.

Which of the following compounds is colourless

Answer»

`Cu_(2)(CH_(3)COO)_(4).2H_(2)O`
`Cu_(2)Cl_(2)`
`CuSO_(4).5H_(2)O`
`[Cu(NH_(3))_(4)]SO_(4).4H_(2)O`

Solution :The anhydrous complex of `Cu^(+)` do not involvee d-d transition and are THUS COLOURLESS.


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