Question

Among the following, the coloured compound is

• A. $CuCl$
• B. $K_3[Cu(CN)_4]$
• C. $CuF_2$
• D. $[Cu(CH_3CN)_4]BF_4$

Answer 1

Answer: (C)

$CuF_2$

Answer 2

$CuF_2 : Cu^{2+} \, has \, 3d^9 -$ configuration, allowed d-d transition, hence, coloured.