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Q. No.The number of unpaired electrons on cobalt in the complex ion \([CoCl_4]^{2-}\) is:
1. 2
2. 3
3. 4
4. 5
Subtopic: VBT, CFT & their Limitations |
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The magnetic moment of a metal ion is 3.87 B.M. The metal ion is:
1. \(V^{3+} \)
2. \(\mathrm{Cr}^{3+} \)
3. \(\mathrm{Mn}^{2+} \)
4. \(T i^{2+} \)
1. \(V^{3+} \)
2. \(\mathrm{Cr}^{3+} \)
3. \(\mathrm{Mn}^{2+} \)
4. \(T i^{2+} \)
Subtopic: VBT, CFT & their Limitations |
88%
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Which of the following complexes is paramagnetic in nature?
1. [Fe(NH3)2(CN)4]2−
2. [Ni(CN)4]2−
3. [Ni(H2O)6]2+
4. [Co(NH3)4Cl2]+
1. [Fe(NH3)2(CN)4]2−
2. [Ni(CN)4]2−
3. [Ni(H2O)6]2+
4. [Co(NH3)4Cl2]+
Subtopic: VBT, CFT & their Limitations |
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The structure of Mn2O7 has
X: Number of Mn-Mn bonds.
Y: Number of Mn- O- Mn bonds.
The value of (X+Y) is:
1. 0
2. 1
3. 5
4. 3
X: Number of Mn-Mn bonds.
Y: Number of Mn- O- Mn bonds.
The value of (X+Y) is:
1. 0
2. 1
3. 5
4. 3
Subtopic: Organometallic Complexes & their Uses |
87%
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The complexes having maximum splitting energy is:
1. [Fe(CN)6]4−
2. [Fe(NH3)6]2+
3. [FeCl6]4−
4. [Fe(ox)3]4−
1. [Fe(CN)6]4−
2. [Fe(NH3)6]2+
3. [FeCl6]4−
4. [Fe(ox)3]4−
Subtopic: VBT, CFT & their Limitations |
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The sum of x + y in [Co(NH3)5Cl]Cl2, where x denotes the primary valency and y represents the secondary valency of the central metal ion, is:
1. 6
2. 9
3. 5
4. 3
1. 6
2. 9
3. 5
4. 3
Subtopic: Werner’s Theory |
80%
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When K4[Fe(CN)6] is added to FeCl3, the Prussian blue complex compound formed is:
1. Fe3[Fe(CN)6]4
2. Fe4[Fe(CN)6]3
3. K2Fe[Fe(CN)6]
4. K2Fe3[Fe(CN)6]2
1. Fe3[Fe(CN)6]4
2. Fe4[Fe(CN)6]3
3. K2Fe[Fe(CN)6]
4. K2Fe3[Fe(CN)6]2
Subtopic: VBT, CFT & their Limitations |
From NCERT
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Arrange the following ligands in order of increasing field strength:
\(\mathrm{S}^{2-}, \mathrm{C}_2 \mathrm{O}_4^{2-}, \mathrm{NH}_3, \text { en, } \mathrm{CO} \)1. \( S^{2-}<\mathrm{CO}<\mathrm{NH}_3<e n<\mathrm{C}_2 \mathrm{O}_4^{2-} \)
2. \(\mathrm{S}^{2-}<\mathrm{NH}_3<e n<\mathrm{CO}<\mathrm{C}_2 \mathrm{O}_4^{2-} \)
3. \(\mathrm{S}^{2-}<\mathrm{C}_2 \mathrm{O}_4^{2-}<\mathrm{NH}_3<\mathrm{en}<\mathrm{CO} \)
4. \(\mathrm{CO}<\mathrm{C}_2 \mathrm{O}_4^{2-}<\mathrm{NH}_3<e n<\mathrm{S}^{2-} \)
Subtopic: VBT, CFT & their Limitations |
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Match the metal complexes in List-I with their corresponding absorbed wavelength (λ) in List-II.
1. A → S, B → P, C → Q
2. A → P, B → Q, C → S
3. A → Q, B → P, C → S
4. A → S, B → Q, C → P
| List-I (Complex) | List-II (λ(absorbed)) | ||
| (A) | [Co(CN)6]3− | (P) | 535 nm |
| (B) | [Co(NH3)6]3+ | (Q) | 375 nm |
| (C) | [Co(NH3)5Cl]2+ | (R) | 600 nm |
1. A → S, B → P, C → Q
2. A → P, B → Q, C → S
3. A → Q, B → P, C → S
4. A → S, B → Q, C → P
Subtopic: VBT, CFT & their Limitations |
83%
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The complex that is utilized for inhibiting the proliferation of cancer cells is:
1. Cis-platin
2. EDTA
3. Cobalt
4. Ethanol-1,2-diamine
1. Cis-platin
2. EDTA
3. Cobalt
4. Ethanol-1,2-diamine
Subtopic: Organometallic Complexes & their Uses |
88%
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