Transition and InnerTransition Elements - Result Question 24

####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:

  1. 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.


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