Transition and InnerTransition Elements - Result Question 125
####25. The colour of light absorbed by an aqueous solution of $CuSO _4$ is
(2012)
(a) orange-red
(b) blue-green
(c) yellow
(d) violet
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Solution:
- The aqueous solution of $CuSO _4$ consist of the complex $\left[Cu\left(H _2 O\right) _4\right]^{2+}$ ion which absorbed in orange-red region and impart deep blue colouration to solution.
