MHT CET · Chemistry · d and f Block Elements
Which among the following cations will not form coloured compounds?
(Atomic number \(\mathrm{Cu}=29, \mathrm{Ti}=22, \mathrm{~V}=23, \mathrm{Mn}=25\) )
- A \(\mathrm{V}^{3+}\)
- B \(\mathrm{Ti}^{3+}\)
- C \(\mathrm{Cu}^{+}\)
- D \(\mathrm{Mn}^{2+}\)
Answer & Solution
Correct Answer
(C) \(\mathrm{Cu}^{+}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{Cu}^{+}\)ion will not form coloured aqueous solution as it does not contain unpaired electrons. \(\mathrm{Cu}^{+}\)ion with \(3 \mathrm{~d}^{10}\) outer electronic configuration has zero unpaired electrons.
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