COMEDK · Chemistry · 23. d and f Block Elements
Which one of the following metal ions is coloured?
- A \(\mathrm{Ti}^{+}\)
- B \(\mathrm{Cu}^{+}\)
- C \(\mathrm{V}^{4+}\)
- D \(\mathrm{Zn}^{2+}\)
Answer & Solution
Correct Answer
(C) \(\mathrm{V}^{4+}\)
Step-by-step Solution
Detailed explanation
Atomic number of \(\mathrm{V}\) is \(23 .\) Electronic configuration of \(\mathrm{V}=[\mathrm{Ar}] 4 s^{2} 3 d^{3}\) \[ \mathrm{V}^{4+}=[A \mathrm{r}] 3 d^{1} \] \(\because\) It contains one unpaired electron, hence it is coloured. While \(\mathrm{Ti}^{+}, \mathrm{Cu}^{+}\)and…
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