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Among the following the coloured compoun...

Among the following the coloured compound is .

A

`CuCI`

B

`K_(3)[Cu(CN)_(4)]`

C

`CuF_(2)`

D

`[Cu(CH_(3)CN)_(4)]BF_(4)`

Text Solution

Verified by Experts

The correct Answer is:
c
`CuFe_(2)` is blue coloured In `CuF_(2') Cu^(2+)` ions are present In all the other given options, the oxidation number of copper is `+1`
`Cu =3d^(10) 4s^(1),Cu^(o+)=3d^(10) 4s^(0)` (colourless)
`Cu^(2+) =3d^(9)` (coloured) one unpaired electrons is present .
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