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#11 | Lanthanoids & Actanoids
(Chemistry) > The d and f Block Elements
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Related Practice Questions :
55%
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From the following, which is the most basic hydroxide?
1. Ce(OH)3
2. Lu(OH)3
3. Yb(OH)3
4. Tb(OH)3
61%
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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 |
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NEET - 2016
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The correct electronic configuration of Gadolinium(Atomic number = 64) is :
1. [Xe]4f86d2
2. [Xe]4f95s1
3. [Xe]4f75d16s2
4. [Xe]4f65d26s2
86%
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NEET - 2015
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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 |
67%
From NCERT
NEET - 2016
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