Q. No.The most common oxidation state for lanthanoids and actinoids is:
| 1. | +5 | 2. | –3 |
| 3. | +1 | 4. | +3 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe different oxidation states exhibited by the lanthanoids are:
| 1. | +2, -3, +4 | 2. | -2, -3, -4 |
| 3. | +2, +3, -4 | 4. | +2, +3, +4 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLanthanoid's most common oxidation state is:
1. 2
2. 5
3. 3
4. 4
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following is a diamagnetic ion?
| 1. | La3+ | 2. | Lu3+ |
| 3. | Ce4+ | 4. | All of the above. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyActinoids show a greater number of oxidation states than lanthanoids because:
| 1. | 4f- orbitals are more diffused than 5f-orbitals |
| 2. | Lesser energy difference between 5f, and 6d orbitals than between 4f, and 5d orbitals |
| 3. | More energy difference between 5f, and 6d orbitals than between 4f, and 5d orbitals |
| 4. | More reactive nature of the actinoids than the lanthanoids. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe electronic configuration of the last element of actinoids is :
1. Thorium, Th:
2. Lawrencium, Lr:
3. Neptunium, Np:
4. Protactinium, Pa:
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe incorrect statement among the following is:
| 1. | Zirconium and Hofnium have identical radii of 160 pm and 159 pm, respectively, as a consequence of lanthanoid contraction. |
| 2. | Lanthanoids reveal only a +3 oxidation state. |
| 3. | Lanthanoid ions, other than the f0 type and the f14 type, are all paramagnetic. |
| 4. | The overall decrease in atomic and ionic radii from lanthanum to lutetium is called lanthanoid contraction. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct statement regarding inner transition elements is
| 1. | The general electronic configuration of actinoids is |
| 2. | The general electronic configuration of lanthanoids is |
| 3. | Alkalies have no action on actinoids. |
| 4. | The principal oxidation state of lanthanoids is +1. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFrom the following, which is the most basic hydroxide?
1. Ce(OH)3
2. Lu(OH)3
3. Yb(OH)3
4. Tb(OH)3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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