Coordination Compounds 2 Question 35

####37. Among the following, the coloured compound is

$(2008,3 M)$

(a) $CuCl$

(b) $K _3\left[Cu(CN) _4\right]$

(c) $CuF _2$

(d) $\left[Cu\left(CH _3 CN\right) _4\right] BF _4$

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Answer:

Correct Answer: 37. (a)

Solution:

  1. $CuF _2: Cu^{2+}$ has $3 d^{9}$-configuration, allowed $d-d$ transition, hence, coloured.


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