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Q. No.Based on the given statements, choose the correct option:
1. Both the statements are correct
2. Statement-I is correct ; Statement-II is incorrect
3. Statement-II is correct; Statement-I is incorrect
4. Both the statements are incorrect
| Statement-I: | Among \(\left[\mathrm{NiCl}_4\right]^{2-},\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}\) \(\left[\mathrm{Ni}(\mathrm{CO})_4\right] \&~ \mathrm{CH}_4\) the \(sp_3 \) hybridized species(s) are 3. |
| Statement-II: | Number of Amphoteric pair(s) among (,\(SnO,SnO_2\) ) ; (\(PbO,PbO_2\) ) ; (\(GeO,GeO_2 \)) are 3. |
1. Both the statements are correct
2. Statement-I is correct ; Statement-II is incorrect
3. Statement-II is correct; Statement-I is incorrect
4. Both the statements are incorrect
Subtopic: VBT, CFT & their Limitations |
Level 4: Below 35%
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Given below are two statements:
1. Statement I and II both are correct
2. Statement I is correct and statement II is incorrect
3. Statement I is incorrect and statement II is correct
4. Both statement I and II are incorrect
| Statement I: | Among \([Mn(H_2O)_6]^{2+}\) and \([Cr(H_2O)_6]^{2+}\) the more stable complex is \([Mn(H_2O)_6]^{2+}\) |
| Statement II: | Magnetic moment of \(K_3[Fe(CN)_6] > K_4[Fe(CN)_6]\) |
1. Statement I and II both are correct
2. Statement I is correct and statement II is incorrect
3. Statement I is incorrect and statement II is correct
4. Both statement I and II are incorrect
Subtopic: VBT, CFT & their Limitations |
Level 4: Below 35%
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Hints
A complex \(Cr(H_2O)_6.Cl_3 \) show conductance similar to 1:2 electrolyte in aq. solution. 9.3 g of this complex is passed through a cation exchanger then excess \(AgNO_3\) is added. Find the mass of AgCl precipitated in gram?
[Molar mass of Cr = 52 g/mol]
1. 10
2. 20
3. 50
4. 60
[Molar mass of Cr = 52 g/mol]
1. 10
2. 20
3. 50
4. 60
Subtopic: Introduction, Classification and Nomenclature |
Level 4: Below 35%
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Consider the following complexes:
(A) \(\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}\)
(B) \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{H}_2 \mathrm{O}\right]^{3+}\)
(C) \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}\)
(D) \(\left[\mathrm{CoF}_6\right]^{3-}\)
The wavelength absorbed by the above complexes are in the order of:
1. A > B > C > D
2. A < B < C < D
3. B < A < C < D
4. C > A > B > D
(A) \(\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}\)
(B) \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{H}_2 \mathrm{O}\right]^{3+}\)
(C) \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}\)
(D) \(\left[\mathrm{CoF}_6\right]^{3-}\)
The wavelength absorbed by the above complexes are in the order of:
1. A > B > C > D
2. A < B < C < D
3. B < A < C < D
4. C > A > B > D
Subtopic: Ligands |
97%
Level 1: 80%+
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| Statements -I | Among \( \mathrm{V}_2 \mathrm{O}_5, {\left[\mathrm{TiF}_6\right]^{3-},\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{CoF}_6\right]^{3-}} \) paramagnetic species are three in number. |
| Statements -II | Increasing number of unpaired electrons in the following. \(\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}<\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}<\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\) |
1. Both statements are correct
2. Statement-I is correct ; statement-II is incorrect
3. Statement-I is incorrect statement-II is correct
4. Both statements are incorrect
Subtopic: VBT, CFT & their Limitations |
Level 4: Below 35%
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Hints
Given below are four statements, select the correct statement(s) among them:
1. II and III
2. III only
3. II, III and IV
4. I, II, III, and IV
| (I) | Hybridisation of \(ClO^-_4\) is \(dsp^2\) |
| (II) | \(\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}\)is tetrahedral |
| (III) | \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\) has \(sp^3d^2\) hybridisation |
| (IV) | \(\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{4-}\) has \(sp^3d^2\) hybridisation |
1. II and III
2. III only
3. II, III and IV
4. I, II, III, and IV
Subtopic: Introduction, Classification and Nomenclature | VBT, CFT & their Limitations |
88%
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Select the correct statement for the paramagnetic complex \(\left[\mathrm{Ni}\left(\mathrm{PPh}_3\right)_2 \mathrm{Cl}_2\right] .\):
1. CFSE value of \(-0.2 \Delta_0\)
2. It is white in colour
3. It has magnetic moment 2.84 B.M
4. It has two geometrical isomers
1. CFSE value of \(-0.2 \Delta_0\)
2. It is white in colour
3. It has magnetic moment 2.84 B.M
4. It has two geometrical isomers
Subtopic: VBT, CFT & their Limitations | Isomerism in Coordination Compounds |
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Level 2: 60%+
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Number of unpaired \(e^–\) in low spin octahedral complex formed by ions \(\mathrm{Mn}^{3+}, \mathrm{Cr}^{3+}, \mathrm{Fe}^{3+} \& ~\mathrm{Co}^{3+}\) follows the order:
1. \( \mathrm{Mn}^{3+}>\mathrm{Cr}^{3+}>\mathrm{Fe}^{3+}>\mathrm{Co}^{3+} \)
2. \( \mathrm{Cr}^{3+}>\mathrm{Mn}^{3+}>\mathrm{Fe}^{3+}>\mathrm{Co}^{3+} \)
3. \( \mathrm{Fe}^{3+}>\mathrm{Cr}^{3+}>\mathrm{Co}^{3+}>\mathrm{Mn}^{3+} \)
4. \( \mathrm{Co}^{3+}>\mathrm{Fe}^{3+}>\mathrm{Cr}^{3+}>\mathrm{Mn}^{3+} \)
1. \( \mathrm{Mn}^{3+}>\mathrm{Cr}^{3+}>\mathrm{Fe}^{3+}>\mathrm{Co}^{3+} \)
2. \( \mathrm{Cr}^{3+}>\mathrm{Mn}^{3+}>\mathrm{Fe}^{3+}>\mathrm{Co}^{3+} \)
3. \( \mathrm{Fe}^{3+}>\mathrm{Cr}^{3+}>\mathrm{Co}^{3+}>\mathrm{Mn}^{3+} \)
4. \( \mathrm{Co}^{3+}>\mathrm{Fe}^{3+}>\mathrm{Cr}^{3+}>\mathrm{Mn}^{3+} \)
Subtopic: VBT, CFT & their Limitations |
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Hints
How many of the following complexes have unpaired electrons?
\(\left[\mathrm{Ni}(\mathrm{CO})_4\right],\left[\mathrm{NiCl}_4\right]^{2-},\left[\mathrm{PtCl}_4\right]^{2-},\) \(\left[\mathrm{Pt}(\mathrm{CN})_4\right]^{2-},\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]\)
1. Two (2)
2. One (1)
3. Zero (0)
4. Three (3)
\(\left[\mathrm{Ni}(\mathrm{CO})_4\right],\left[\mathrm{NiCl}_4\right]^{2-},\left[\mathrm{PtCl}_4\right]^{2-},\) \(\left[\mathrm{Pt}(\mathrm{CN})_4\right]^{2-},\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]\)
1. Two (2)
2. One (1)
3. Zero (0)
4. Three (3)
Subtopic: Ligands | VBT, CFT & their Limitations |
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Consider the given table below:
Choose the correct answer from the given options.
1. A, B and C only
2. C and E only
3. A, B and D only
4. C, D and E only
| (A) | \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}\) : Inner orbital complex , \(d ^2 sp^ 3\) hybridization |
| (B) | \(\left[\mathrm{MnCl}_6\right]^{3-}\) : Outer orbital complex, \(sp^3d^2\) hybridization |
| (C) | \(\left[\mathrm{CoF}_6\right]^{3-}\): Outer orbital complex, \(d^2sp^3\) hybridization |
| (D) | \(\left[\mathrm{FeF}_6\right]^{3-}\): Outer orbital complex, \(sp^3d^2\) hybridization |
| (E) | \(\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}\): Inner orbital complex , \(sp^3\) hybridization |
Choose the correct answer from the given options.
1. A, B and C only
2. C and E only
3. A, B and D only
4. C, D and E only
Subtopic: Introduction, Classification and Nomenclature | VBT, CFT & their Limitations |
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