- 1(current)
Q. No.In the listed lanthanoids, the element that displays a +2 oxidation state along with the characteristic +3 oxidation state of lanthanoids is:
(a) Ce
(b) Eu
(c) Yb
(d) Ho
Choose the correct option
| 1. | (a, b) | 2. | (b, c) |
| 3. | (c, d) | 4. | (a, d) |
Subtopic: Â Lanthanoid & Actinoids Contraction |
 73%
From NCERT
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Match Compound/element in Column-I with uses in Column-II and select the best match from the codes given:
| Column-I (Compound/element) |
Column-II (Uses) |
||
| A. | Lanthanoid oxide | I. | Petroleum cracking |
| B. | Lanthanoid | II. | Television screen |
| C. | Mischmetal | III. | Lanthanoid metal + iron |
| D. | Mixed oxides of lanthanoids are employed | IV. | Production of iron alloy |
| Options: | A | B | C | D |
| 1. | II | I | IV | III |
| 2. | I | II | III | IV |
| 3. | II | IV | III | I |
| 4. | IV | I | III | II |
Subtopic: Â Lanthanoid & Actinoids Contraction |
 56%
From NCERT
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Match the statements given in Column I with the oxidation states given in Column and mark the correct option.
| Column I | Column II | ||
| A. | Oxidation state of Mn in \(\mathrm{MnO}_2\) is | 1. | +2 |
| B. | Most stable oxidation state of Mn is | 2. | +3 |
| C. | Most stable oxidation state of Mn in oxides is | 3. | +4 |
| D. | Characteristic oxidation state of lanthanoids is | 4. | +5 |
| 5. | +7 |
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 1 | 5 | 2 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 3 | 2 |
Subtopic: Â Lanthanoid & Actinoids Contraction |
 87%
From NCERT
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| Assertion (A): | Actinoids form relatively less stable complexes as compared to lanthanoids. |
| Reason (R): | Actinoids can utilise their 5f orbitals along with 6d orbitals in bonding but lanthanoids do not use their 4f orbital for bonding. |
| 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 not True but (R) is True. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Lanthanoid & Actinoids Contraction |
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
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NEET 2026 - Target Batch - Vital
- 1(current)
Q. No.
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