- 1(current)
Q. No.The incorrect statement regarding the lanthanons is ;
| 1. | Europium shows +2 oxidation state |
| 2. | The basicity decreases as the ionic radius decreases from Pr to Lu |
| 3. | All the lanthanons are much more reactive than aluminium |
| 4. | Ce (+4) solutions are widely used as oxidising agents in volumetric analysis |
Subtopic: Â f-Block Elements- Properties & Uses |
 62%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
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The electronic configurations of Eu (Atomic no. 63), Gd (Atomic no. 64), and Tb (Atomic no. 65) are, respectively:
| 1. | [Xe] 4f6 5d1 6s2, [Xe]4f7 5d1 6s2, and [Xe] 4f9 6s2
|
| 2. | [Xe] 4f6 5d1 6s2, [Xe] 4f75d1 6s2, and [Xe]4f8 5d1 6s2
|
| 3. | [Xe] 4f7 6s2, [Xe]4f7 5d1 6s2, and [Xe] 4f9 6s2
|
| 4. | [Xe] 4f7 6s2, (Xe]4f8 6s2, and [Xe]4f8 5d1 6s2 |
Subtopic: Â f-Block Elements- Properties & Uses |
 67%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
- 1(current)
Q. No.
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