Question:
Identify the ion having 4f\(^6\) electronic configuration.}\\[6pt]
Identify the ion having 4f\(^6\) electronic configuration.}\\[6pt]
Updated On: Jan 10, 2025
- Gd\(^{3+}\)
- Sm\(^{3+}\)
- Sm\(^{2+}\)
- Tb\(^{3+}\)
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
The electronic configuration of Gd (Gadolinium) is [Xe] 4f7 5d1 6s2. When Gd loses 3 electrons (one from the 6s orbital and two from the 5d orbital), it becomes Gd3+ with the electronic configuration [Xe] 4f7. This configuration does *not* match 4f6.
The electronic configuration of Sm (Samarium) is [Xe] 4f6 6s2. When Sm loses 2 electrons from the 6s orbital, it becomes Sm2+ with the configuration [Xe] 4f6. This matches the given 4f6 configuration.
The configuration of Sm3+ is [Xe] 4f5, and that of Tb3+ (Terbium) is [Xe] 4f8. Neither of these matches the required configuration.
Therefore, the ion with a 4f6 configuration is Sm2+.
Was this answer helpful?
0
0
Top Questions on Some Applications of d- and f-Block Elements
- Why is \( Cr^{2+} \) strongly reducing while \( Mn^{3+} \) is strongly oxidizing?
- CBSE CLASS XII - 2025
- Chemistry
- Some Applications of d- and f-Block Elements
- Write two consequences of lanthanide contraction.
- CBSE CLASS XII - 2025
- Chemistry
- Some Applications of d- and f-Block Elements
- Which element of the 3d series has the lowest enthalpy of atomisation and why?
- CBSE CLASS XII - 2025
- Chemistry
- Some Applications of d- and f-Block Elements
- When \( \text{FeCr}_2\text{O}_4 \) is fused with \( \text{Na}_2\text{CO}_3 \) in the presence of air, it gives a yellow solution of compound (A). Compound (A) on acidification gives compound (B). Compound (B) on reaction with KCl forms an orange-colored compound (C). An acidified solution of compound (C) oxidizes \( \text{Na}_2\text{SO}_3 \) to (D). Identify (A), (B), (C), and (D).
- CBSE CLASS XII - 2025
- Chemistry
- Some Applications of d- and f-Block Elements
- The element having \([Ar]3d^{10}4s^1\) electronic configuration is
- CBSE CLASS XII - 2025
- Chemistry
- Some Applications of d- and f-Block Elements
View More Questions
Questions Asked in WBJEE exam
- Two straight conducting plates form an angle θ where their ends are joined. A conducting bar in contact with the plates and forming an isosceles triangle with them, starts at the vertex at time t = 0 and moves with constant velocity v to the right as shown in the figure. A magnetic field B points out of the page. The magnitude of emf induced at t = 1 second will be:
- WBJEE - 2024
- Electromagnetic induction
- A 2V cell is connected across the points A and B as shown in the figure. Assume that the resistance of each diode is zero in forward bias and infinity in reverse bias. The current supplied by the cell is:
- WBJEE - 2024
- Current electricity
- Consider a circuit where a cell of emf \( E_0 \) and internal resistance \( r \) is connected across the terminal A and B as shown in the figure. The value of \( R \) for which the power generated in the circuit is maximum, is given by:
- WBJEE - 2024
- Current electricity
- In a series LCR circuit, the rms voltage across the resistor and the capacitor are \(30 \, \text{V}\) and \(90 \, \text{V}\) respectively. If the applied voltage is \(50\sqrt{2}\sin\omega t\), then the peak voltage across the inductor is:
- WBJEE - 2024
- Alternating current
- Which of the following statement(s) is/are true in respect of nuclear binding energy?
(i) The mass energy of a nucleus is larger than the total mass energy of its individual protons and neutrons.
(ii) If a nucleus could be separated into its nucleons, an energy equal to the binding energy would have to be transferred to the particles during the separating process.
(iii) The binding energy is a measure of how well the nucleons in a nucleus are held together.
(iv) The nuclear fission is somehow related to acquiring higher binding energy.- WBJEE - 2024
- Nuclear physics
View More Questions