- 1(current)
Q. No.Given below are two statements :
In the light of the above statements, choose the correct answer from the options given below :
| Statement I: | Ferromagnetism is considered as an extreme form of paramagnetism. |
| Statement II: | The number of unpaired electrons in a \(Cr^{2+}\)ion (Z=24) is the same as that of a \(Nd^{3+}\) ion (Z=60) |
In the light of the above statements, choose the correct answer from the options given below :
| 1. | Statement I is True but Statement II is False. |
| 2. | Statement I is False but Statement II is True. |
| 3. | Both Statement I and Statement II are True. |
| 4. | Both Statement I and Statement II are False. |
Subtopic: Â d-Block Elements- Properties & Uses |Â f-Block Elements- Properties & Uses |
 52%
From NCERT
NEET - 2025
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The pair of lanthanoid ions, consisting of elements which are diamagnetic, is:
1. Ce3+ and Eu2+
2. Gd3+ and Eu3+
3. Pm3+ and Sm3+
4. Ce4+ and Yb2+
1. Ce3+ and Eu2+
2. Gd3+ and Eu3+
3. Pm3+ and Sm3+
4. Ce4+ and Yb2+
Subtopic: Â f-Block Elements- Properties & Uses |
 66%
From NCERT
NEET - 2024
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The behaviour of samarium (Z=62) is very much like europium (Z=63), since both elements:
| 1. | exhibit +2 and +3 oxidation states. |
| 2. | have \(4 f^5 6 s^2 \) and \(4 f^6 6 s^2\) electronic configurations, respectively. |
| 3. | have \(4 f^7 6 s^2\) and \(4 f^8 6 s^2\) electronic configurations, respectively. |
| 4. | have the same atomic radii. |
Subtopic: Â f-Block Elements- Properties & Uses |
 55%
From NCERT
NEET - 2024
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NEET 2026 - Target Batch - Vital
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The common oxidation state shown by actinoids is +3 with the other oxidation states being +4, +3, +6, and +7. The number of oxidation states shown by the following elements decrease in the order:
Choose the correct answer from the options given below:
| A. | \(Np(Z-93)\) | B. | \(Am(Z-95)\) |
| C. | \(Ac(Z-89)\) | D. | \(Pa(Z-91)\) |
| 1. | A > B > D > C | 2. | A > B > C > D |
| 3. | B > A > D > C | 4. | D > B > A > C |
Subtopic: Â f-Block Elements- Properties & Uses |
 55%
NEET - 2024
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NEET 2026 - Target Batch - Vital
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The UV-visible absorption bands in the spectra of lanthanoid ions are 'X', probably because of the excitation of electrons involving 'Y'. The 'X' and 'Y', respectively, are:
1. Broad and f orbitals
2. Narrow and f orbitals
3. Broad and d and f orbitals
4. Narrow and d and f orbitals
1. Broad and f orbitals
2. Narrow and f orbitals
3. Broad and d and f orbitals
4. Narrow and d and f orbitals
Subtopic: Â f-Block Elements- Properties & Uses |
 54%
From NCERT
NEET - 2024
Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 468842
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Given below are two statements:
| Assertion (A): | Ionisation enthalpies of early actinoids are lower than early lanthanoids. |
| Reason (R): | Electrons entering 5f orbitals in actinoids experience greater shielding from the nuclear charge. |
| 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. | (A) is False but (R) is True. |
Subtopic: Â f-Block Elements- Properties & Uses |
From NCERT
NEET - 2023
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NEET 2026 - Target Batch - Vital
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Gadolinium has a low value of third ionisation enthalpy because of:
| 1. | High basic character | 2. | Small size |
| 3. | High exchange enthalpy | 4. | High electronegativity |
Subtopic: Â f-Block Elements- Properties & Uses |
 70%
From NCERT
NEET - 2022
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
- 1(current)
Q. No.
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