JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
Which of the following compounds show colour due to \(d-d\) transition?
- A \(\mathrm{CuSO}_4 .5 \mathrm{H}_2 \mathrm{O}\)
- B \(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7\)
- C \(\mathrm{K}_2 \mathrm{CrO}_4\)
- D \(\mathrm{KMnO}_4\)
Answer & Solution
Correct Answer
(A) \(\mathrm{CuSO}_4 .5 \mathrm{H}_2 \mathrm{O}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}\) \(\mathrm{Cu}^{2+}: 3 \mathrm{~d}^9 4 \mathrm{~s}^0\) unpaired electron present so it show colour due to \(d-d\) transition.
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