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Q. No.Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
| Assertion (A): | Ce3+ ion and Yb+3 ion are colourless. |
| Reason (R): | Ce3+ ion and Yb+3 ion cannot show f-f transition |
| 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: f-Block Elements- Properties & Uses |
50%
From NCERT
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How many \(f\) electrons are present in the ground-state electronic configuration of Np (Z = 93)?
| 1. | 18 | 2. | 14 |
| 3. | 4 | 4. | 21 |
Subtopic: f-Block Elements- Properties & Uses |
From NCERT
JEE
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Cerium (IV) has a noble gas configuration. Which of the following is correct statement about it ?
1. It will not prefer to undergo redox reactions.
2. It will prefer to gain electron and act as an oxidizing agent
3. It will prefer to give away an electron and behave as reducing agent
4. It acts as both, oxidizing and reducing agent.
1. It will not prefer to undergo redox reactions.
2. It will prefer to gain electron and act as an oxidizing agent
3. It will prefer to give away an electron and behave as reducing agent
4. It acts as both, oxidizing and reducing agent.
Subtopic: f-Block Elements- Properties & Uses |
From NCERT
JEE
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