Among the following, the coloured compound is A CuCl B K3[Cu(CN)4] C CuF2 D [Cu(CH3CN)4]BF4

Dear Student,

Please find below the solution to the asked query:

CuF₂, option C, is a green coloured compound.
Cu(I) compounds are usually white or colourless compounds. 
Most Cu(II) compounds are coloured.
CuF₂ contains copper in +2 oxidation state while the rest of the compounds contain copper in cuprous state.

Hope this information will clear your doubts about colour of copper compounds.

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