Question:
Which of the following transition metal ion is not coloured?
Which of the following transition metal ion is not coloured?
Show Hint
A transition metal ion is colourless if it has a completely filled or completely empty d-orbital configuration.
Updated On: Jul 1, 2025
- Cu$^+$
- Ni$^{2+}$
- Co$^{2+}$
- V$^{3+}$
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
The colour of a transition metal ion arises due to the presence of unpaired electrons in the d-orbitals which allow d-d transitions. Cu$^+$ has an electronic configuration of [Ar] 3d$^{10}$, which has all paired electrons and no possibility of d-d transitions. Therefore, it is colourless.
Was this answer helpful?
0
0
Top Questions on d -and f -Block Elements
- How do you prepare potassium manganate from pyrolusite ore?
- CBSE CLASS XII - 2025
- Chemistry
- d -and f -Block Elements
- Why is the ability of oxygen greater than fluorine to stabilise higher oxidation states of transition metals?
- CBSE CLASS XII - 2025
- Chemistry
- d -and f -Block Elements
- Out of KMnO$_4$ and K$_2$MnO$_4$, which one is paramagnetic and why?
- CBSE CLASS XII - 2025
- Chemistry
- d -and f -Block Elements
- Assertion (A): First ionisation enthalpy of Cr is lower than that of Zn.
Reason (R): Zinc is a non-transition element.- CBSE CLASS XII - 2025
- Chemistry
- d -and f -Block Elements
- With increase in atomic number, the melting point of transition metals :
- CBSE CLASS XII - 2025
- Chemistry
- d -and f -Block Elements
View More Questions
Questions Asked in CBSE CLASS XII exam
- Find the image \( A' \) of the point \( A(2,1,2) \) in the line \[ l: \mathbf{r} = 4\hat{i} + 2\hat{j} + 2\hat{k} + \lambda (\hat{i} - \hat{j} - \hat{k}). \] Also, find the equation of the line joining \( A A' \). Find the foot of the perpendicular from point \( A \) on the line \( l \).
- If a line makes angles of \( \frac{3\pi}{4} \) and \( \frac{\pi}{3} \) with the positive directions of \( x \), \( y \), and \( z \)-axes respectively, then \( \theta \) is:
- Differentiate \(\frac{\sin x}{\sqrt{\cos x}}\) with respect to x.
- CBSE CLASS XII - 2025
- Differentiation
- For a reaction X + Y → Z, in which both X and Y follow first order kinetics; if the concentration of X is increased 2 times and concentration of Y is increased 3 times, how does it affect the rate of reaction?
- CBSE CLASS XII - 2025
- Chemical Kinetics
- Find the angle at which the given lines are inclined to each other: \[ l_1: \frac{x - 5}{2} = \frac{y + 3}{1} = \frac{z - 1}{-3} \] \[ l_2: \frac{x}{3} = \frac{y - 1}{2} = \frac{z + 5}{-1} \]
View More Questions