- 1(current)
Q. No.Gadolinium belongs to 4f series. It’s atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?
1.
2.
3.
4.
Subtopic: f-Block Elements- Properties & Uses |
91%
Level 1: 80%+
NEET - 2015
Hints
A pair among the following have nearly the same atomic radii:
(Numbers in the parenthesis are atomic numbers).
1. Ti (22) and Zr (40)
2. Zr (40) and Nb (41)
3. Zr (40) and Hf (72)
4. Zr (40) and Ta (73)
2. Zr (40) and Nb (41)
3. Zr (40) and Hf (72)
4. Zr (40) and Ta (73)
Subtopic: f-Block Elements- Properties & Uses | Lanthanoid & Actinoids Contraction |
91%
Level 1: 80%+
NEET - 2015
Hints
Diamagnetic lanthanoid ion among the following is:
(At nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70)
1. Sm2+
2. Eu2+
3. Yb2+
4. Ce2+
(At nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70)
1. Sm2+
2. Eu2+
3. Yb2+
4. Ce2+
Subtopic: f-Block Elements- Properties & Uses |
66%
Level 2: 60%+
AIPMT - 2013
Hints
The outer electronic configuration of Gd:
( At. No. 64)
1. 4f5 5d4 6s1
2. 4f7 5d1 6s2
3. 4f3 5d5 6s2
4. 4f4 5d5 6s1
( At. No. 64)
1. 4f5 5d4 6s1
2. 4f7 5d1 6s2
3. 4f3 5d5 6s2
4. 4f4 5d5 6s1
Subtopic: f-Block Elements- Properties & Uses |
90%
Level 1: 80%+
NEET - 2013
Hints
Actinoids exhibit more number of oxidation states than lanthanoids. It is because of:
| 1. | The greater metallic character of the lanthanoids than that of the corresponding actinoids. |
| 2. | More energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals. |
| 3. | The lesser energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals. |
| 4. | More active nature of the actinoids. |
Subtopic: d-Block Elements- Properties & Uses | f-Block Elements- Properties & Uses | Lanthanoid & Actinoids Contraction |
81%
Level 1: 80%+
AIPMT - 2011
Hints
Subtopic: f-Block Elements- Properties & Uses |
91%
Level 1: 80%+
AIPMT - 2010
Hints
Links
Actinoids exhibit more oxidation states than lanthanoids. The main reason for this is:
| 1. | More energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals |
| 2. | Greater metallic character of the lanthanoids than that of the corresponding actinoids |
| 3. | The lesser energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals |
| 4. | More active nature of the actinoids |
Subtopic: f-Block Elements- Properties & Uses |
67%
Level 2: 60%+
AIPMT - 2006
Hints
- 1(current)
Q. No.
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