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Q. No.The stability of Cu2+ is greater than that of Cu+ salts in an aqueous solution due to:
1. Second ionisation enthalpy
2. First ionisation enthalpy
3. Enthalpy of atomization
4. Hydration energy
Subtopic: d-Block Elements- Properties & Uses |
73%
From NCERT
NEET - 2023
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| Assertion (A): | Cr(VI) in the form of dichromate in an acidic medium is a strong oxidising agent, than MoO3 and WO3. |
| Reason (R): | Mo(VI) and W(VI) are found to be more stable than Cr(VI). |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: d-Block Elements- Properties & Uses |
77%
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| Assertion (A): | In transition elements, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. |
| Reason (R): | Transition elements exhibit variable oxidation states. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: d-Block Elements- Properties & Uses |
86%
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An element among the following capable of showing the maximum number of
different oxidation states is:
1. Pa
2. Cm
3. Lr
4. Np
different oxidation states is:
1. Pa
2. Cm
3. Lr
4. Np
Subtopic: f-Block Elements- Properties & Uses |
78%
From NCERT
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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%
From NCERT
NEET - 2013
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Among the following, the element belongs to \(4d \) transition series is:
1. Cu
2. Os
3. Pd
4. Pt
1. Cu
2. Os
3. Pd
4. Pt
Subtopic: d-Block Elements- Properties & Uses |
79%
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The correct electronic configuration of Ytterbium (Yb ,atomic no- 70) is:
1. [Xe]4\(\)f125d26s2
2. [Xe]4f145d26s0
3. [Xe]4f145d16s1
4. [Xe]4f145d06s2
1. [Xe]4\(\)f125d26s2
2. [Xe]4f145d26s0
3. [Xe]4f145d16s1
4. [Xe]4f145d06s2
Subtopic: f-Block Elements- Properties & Uses |
76%
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The decrease in size from left to right in the actinoid series is greater and more gradual than that in the lanthanoid series due to:
| 1. | 4f orbitals are penultimate |
| 2. | 4f orbitals have a greater shielding effect |
| 3. | 5f orbitals have a poor shielding effect |
| 4. | 5f orbitals have a greater shielding effect |
Subtopic: Lanthanoid & Actinoids Contraction |
79%
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NEET - 2022
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| Assertion(A): | Aquated copper (I) cation undergoes disproportionation as: 2Cu+(aq.)→Cu2+(aq.)+Cu |
| Reason(R): | Hydration energy of Cu2+ is higher than that of Cu+ which compensates second ionization energy of Cu. |
| 1. | Both (A) and (R) are True and (R) is a correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not a correct explanation of (A). |
| 3. | (A) is True but the (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: d-Block Elements- Properties & Uses |
87%
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Identify the pair of Lanthanoides with one strong oxidant and one strong reductant:
| 1. | Ce(IV), Tb(IV) | 2. | Yb(II), Eu(II) |
| 3. | Eu(IV), Lu(III) | 4. | Ce(IV), Eu(II) |
Subtopic: d-Block Elements- Properties & Uses |
71%
From NCERT
NEET - 2022
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