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CaCl2 is colourless, while CuSO(4).5H(2)...

`CaCl_2` is colourless, while `CuSO_(4).5H_(2)O` is coloured. Explain?

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To explain why `CaCl_2` is colorless while `CuSO_4·5H_2O` is colored, we need to analyze the electronic configurations of the elements involved and understand the concept of d-d transitions. ### Step-by-Step Solution: 1. **Identify the Compounds**: - We have two compounds: `CaCl_2` (Calcium Chloride) and `CuSO_4·5H_2O` (Copper(II) Sulfate Pentahydrate). 2. **Determine the Electronic Configuration of Calcium**: ...
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