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). |
| 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: d-Block Elements- Properties & Uses | f-Block Elements- Properties & Uses |
54%
Level 3: 35%-60%
NEET - 2025
Please attempt this question first.
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Please attempt this question first.
The E° value for the Mn3+/Mn2+ couple is more positive than that of Cr3+/Cr2+ or Fe3+/Fe2+ due to change of:
| 1. | d5 to d2 configuration | 2. | d4 to d5 configuration |
| 3. | d3 to d5 configuration | 4. | d5 to d4 configuration |
Subtopic: d-Block Elements- Properties & Uses |
70%
Level 2: 60%+
NEET - 2024
Hints
Which of the following ions have the same 'spin-only' magnetic moment?
| A. | Ti+3 | B. | Cr2+ |
| C. | Mn2+ | D. | Fe2+ |
| E. | Sc3+ | ||
Choose the most appropriate answer from the options given below:
| 1. | A and E only | 2. | B and C only |
| 3. | A and D only | 4. | B and D only |
Subtopic: d-Block Elements- Properties & Uses |
65%
Level 2: 60%+
NEET - 2024
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Match List-I with List-II
Choose the correct answer from the options given below:
| List-I (Element) |
List-II (Most Common oxidation state/s) |
||
| A. | \(\mathrm{Fe}\) | I. | +2, +7 |
| B. | V | II. | +3, +2 |
| C. | \(\mathrm{Mn}\) | III. | +4 |
| D. | \(\mathrm{Ti}\) | IV. | +5 |
| 1. | A-II, B-IV, C-I, D-III | 2. | A-IV, B-II, C-I, D-III |
| 3. | A-II, B-I, C-IV, D-III | 4. | A-I, B-IV, C-II, D-III |
Subtopic: d-Block Elements- Properties & Uses |
82%
Level 1: 80%+
NEET - 2024
Hints
Which of the following pairs of ions will have the same spin only magnetic moment values within the pair?
A. \(\mathrm{Zn ^{2+}, Ti ^{2+}}\)
B. \(\mathrm{Cr ^{2+}, Fe ^{2+}}\)
C. \(\mathrm{Ti ^{3+}, Cu ^{2+}}\)
D. \(\mathrm{V ^{2+}, Cu ^{+}}\)
Choose the correct answer from the options given below:
A. \(\mathrm{Zn ^{2+}, Ti ^{2+}}\)
B. \(\mathrm{Cr ^{2+}, Fe ^{2+}}\)
C. \(\mathrm{Ti ^{3+}, Cu ^{2+}}\)
D. \(\mathrm{V ^{2+}, Cu ^{+}}\)
Choose the correct answer from the options given below:
| 1. | C and D only | 2. | A and D only |
| 3. | A and B only | 4. | B and C only |
Subtopic: d-Block Elements- Properties & Uses |
72%
Level 2: 60%+
NEET - 2024
Hints
Which of the following set of ions act as oxidizing agents?
| 1. | \(\mathrm{Ce}^{4+} \) and \(\mathrm{Tb}^{4+}\) | 2. | \(\mathrm{La}^{3+} \) and \(\mathrm{Lu}^{3+}\) |
| 3. | \(\mathrm{Eu}^{2+} \) and \(\mathrm{Yb}^{2+}\) | 4. | \(\mathrm{Eu}^{2+} \) and \(\mathrm{Tb}^{4+}\) |
Subtopic: d-Block Elements- Properties & Uses |
70%
Level 2: 60%+
NEET - 2024
Hints
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
1. Second ionisation enthalpy
2. First ionisation enthalpy
3. Enthalpy of atomization
4. Hydration energy
Subtopic: d-Block Elements- Properties & Uses |
73%
Level 2: 60%+
NEET - 2023
Hints
Which of the following statements is incorrect?
Choose the correct answer from the options given below:
| A. | All the transition metals except scandium form MO oxides which are ionic. |
| B. | The highest oxidation number corresponds to the group number in transition metal oxides is attained in Sc2O3 to Mn2O7. |
| C. | Basic character increases from V2O3 to V2O4 to V2O5. |
| D. | V2O4 dissolves in acids to give VO43-. |
| E. | CrO is basic, but Cr2O3 is amphoteric. |
| 1. | B and C only | 2. | A and E only |
| 3. | B and D only | 4. | C and D only |
Subtopic: d-Block Elements- Properties & Uses |
53%
Level 3: 35%-60%
NEET - 2023
Hints
| Assertion (A): | Ionization enthalpy increases along each series of transition elements from left to right. However, small variations occur. |
| Reason (R): | There is a corresponding increase in nuclear charge which accompanies the filling of electrons in the inner d-orbitals. |
| 1. | (A) is True but (R) is False |
| 2. | (A) is False but (R) is True |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
Subtopic: d-Block Elements- Properties & Uses |
74%
Level 2: 60%+
NEET - 2023
Hints
Identify the incorrect statement from the following:
| 1. | The shapes of dxy, dyz, and dzx orbitals are similar to each other; and dx2 -y2 and dz2 are similar to each other. |
| 2. | All the five 5d orbitals are different in size when compared to the respective 4d orbitals. |
| 3. | All the five 4d orbitals have shapes similar to the respective 3d orbitals. |
| 4. | In an atom, all the five 3d orbitals are equal in energy in free state. |
Subtopic: d-Block Elements- Properties & Uses |
57%
Level 3: 35%-60%
NEET - 2022
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