- 1(current)
Q. No.Given below are two statements:
| Assertion (A): | [NiCl4]2− is paramagnetic while [Ni(CO)4] is diamagnetic though both are tetrahedral. |
| Reason (R): | CO is a strong field ligand, thus pairing of electrons takes place in [Ni(CO)4]. |
| 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: VBT, CFT & their Limitations |
71%
From NCERT
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| Assertion (A): | ion shows magnetic moment corresponding to two unpaired electrons. |
| Reason(R): | Because it has type hybridization. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True and (R) is not the correct explanation of (A). |
| 3. | (A) is True but the (R) is False. |
| 4. | (A) is False but the (R) is True. |
Subtopic: VBT, CFT & their Limitations |
77%
From NCERT
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| Assertion (A): | and are reducing in nature. |
| Reason (R): | Unpaired electrons are present in their d-orbitals. |
| 1. | Both (A) and (R) are True and the (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True and (R) is not the correct explanation of (A). |
| 3. | (A) is true but the (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: VBT, CFT & their Limitations |
From NCERT
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Consider the following statements.
The correct statement(s) is/are
1. a, b only
2. b, c only
3. a, b, c
4. None of the above
| a. | The hexaquamanganese(II) ion contains five unpaired electrons, while the hexacyanomanganese(II) ion contains only one unpaired electron. |
| b. | [Mn(H2O)6]2+ is an outer sphere complex, and [Mn(CN)6]4− is an inner sphere complex. |
| c. | Arrangement of the electrons in [Mn(CN)6]4− is t2g5eg0. |
1. a, b only
2. b, c only
3. a, b, c
4. None of the above
Subtopic: VBT, CFT & their Limitations |
78%
From NCERT
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Select the correct option based on statements below:
| I: | [Fe(H2O)6]3+ is strongly paramagnetic whereas [Fe(CN)6]3− is weakly paramagnetic. |
| II: | [Fe(H2O)6]3+ has 4 unpaired electrons while [Fe(CN)6]3− has 5 unpaired electrons. |
1. Both I and II are true.
2. I is true and II is false.
3. Both I and II are false.
4. I is false but II is true.
Subtopic: VBT, CFT & their Limitations |
77%
From NCERT
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| Statement I: | [Ni(CN)4]2− structure is tetrahedral and diamagnetic in nature. |
| Statement II: | [NiCl4]2− structure is tetrahedral and diamagnetic in nature. |
1. Both Statement I and Statement II are true.
2. Statement I is true and Statement II is false.
3. Both Statement I and Statement II are false.
4. Statement I is false, Statement II is true.
Subtopic: VBT, CFT & their Limitations |
58%
From NCERT
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The correct statements among the following are:
| (I) | Valence bond theory cannot explain the color exhibited by transition metal complexes. |
| (II) | Valence bond theory can predict quantitatively the magnetic properties of transition metal complexes. |
| (III) | Valence bond theory cannot distinguish ligands as weak and strong field ones. |
1. (I), (II), and (III)
2. (II), and (III) only
3. (I), and (II) only
4. (I), and (III) only
Subtopic: VBT, CFT & their Limitations |
From NCERT
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Match the complex ions given in Column I with the hybridization and number of unpaired electrons given in Column II and assign the correct code.
| Column l |
Column II (Hybridisation, number of unpaired electrons) |
|
A. |
1. dsp2, 1 |
|
B. |
2. sp3d2, 5 |
|
C. |
3. d2sp3, 3 |
|
D. |
4. sp3d2, 2 |
Codes:
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 1 | 4 | 2 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 3 | 2 |
Subtopic: VBT, CFT & their Limitations |
85%
From NCERT
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Match the complex ions give in Column I with the colours given in column II and assign the correct code.
|
Column I (Complex ion) |
Column II (Colour) |
|
A. |
1. Violet |
|
B. |
2. Green |
|
C. |
3. Pale blue |
|
D. |
4. Yellowish orange |
Codes:
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 1 | 5 | 2 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 3 | 2 | 1 |
Subtopic: VBT, CFT & their Limitations |
From NCERT
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- 1(current)
Q. No.
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