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Q. No.Consider the following statements:
A.
Carnallite (KCl.MgCl2.6H2O) is an example of double salt.
B.
Thiocyanato ligand behaves as an ambidentate ligand.
C.
[CoF6]3- is called a spin-free complex.
Which of the above statements are correct?
1.
A and B
2.
B and C
3.
A and C
4.
A, B, and C
Subtopic: Introduction, Classification and Nomenclature |
54%
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The correct IUPAC name for [CrF2(en)2]Cl is:
| 1. | Chlorodifluoridoethylenediaminechromium(III) chloride |
| 2. | Bis-(ethylenediamine)difluoridochromium(III) chloride |
| 3. | Difluorobis-(ethylenediamine)chromium(III) chloride |
| 4. | Chlorodifluoridobis(ethylenediamine)chromium (III) |
Subtopic: Introduction, Classification and Nomenclature |
81%
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NEET - 2013
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A diamagnetic compound among the following is:
1. [Co(F6)]3–
2. [Ni(CN)4]2–
3. [NiCl4]2–
4. [Fe(CN)6]3–
1. [Co(F6)]3–
2. [Ni(CN)4]2–
3. [NiCl4]2–
4. [Fe(CN)6]3–
Subtopic: VBT, CFT & their Limitations |
81%
From NCERT
NEET - 2013
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Match List-I with List-II :
Choose the correct answer from the options given below:
| List-I (Complexes) | List-II (Type of isomer) | ||
| A. | [Co(NH3)5NO2]Cl2 and [Co(NH3)5ONO]Cl2 | I. | Ionisation isomerism |
| B. | [Cr(NH3)6] [Co(CN)6] and [Cr(CN)6][Co(NH3)6] | II. | Coordination isomerism |
| C. | [Co(NH3)5(SO4)]Br and [Co(NH3)5Br]SO4 | III. | Linkage isomerism |
| D. | [Cr(H2O)6]Cl3 and [Cr(H2O)5Cl]Cl2.H2O | IV. | Solvate isomerism |
| (A) | (B) | (C) | (D) | |
| 1. | (III) | (I) | (II) | (IV) |
| 2. | (II) | (III) | (IV) | (I) |
| 3. | (III) | (II) | (I) | (IV) |
| 4. | (IV) | (III) | (II) | (I) |
Subtopic: Isomerism in Coordination Compounds |
87%
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NEET - 2022
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A complex compound of Co(X) is pink colour in water. On reaction with conc. HCl forms complex (Y) of deep blue colour and has geometry (Z). Identify (X), (Y) and (Z).
1. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{CoCl}_6\right]^{3-}, \text {Octahedral} \)
2. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},\left[\mathrm{CoCl}_4\right]^{2-}, \text {Tetrahedral} \)
3. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{CoCl}_4\right]^{2-}, \text {Tetrahedral } \)
4. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},\left[\mathrm{CoCl}_6\right]^{3-}, \text {Octahedral} \)
1. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{CoCl}_6\right]^{3-}, \text {Octahedral} \)
2. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},\left[\mathrm{CoCl}_4\right]^{2-}, \text {Tetrahedral} \)
3. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{CoCl}_4\right]^{2-}, \text {Tetrahedral } \)
4. \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},\left[\mathrm{CoCl}_6\right]^{3-}, \text {Octahedral} \)
Subtopic: VBT, CFT & their Limitations |
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Type of isomerism exhibited by compounds
[Cr(H2O)6]Cl3, [Cr(H2O)5Cl]Cl2.H2O,
[Cr(H2O)4Cl2]Cl.2H2O and the value of coordination number (CN) of central metal ion in all these compounds, respectively, is:
1. Geometrical isomerism, CN = 2
2. Optical isomerism, CN = 4
3. Ionisation isomerism, CN = 4
4. Solvate isomerism, CN = 6
[Cr(H2O)6]Cl3, [Cr(H2O)5Cl]Cl2.H2O,
[Cr(H2O)4Cl2]Cl.2H2O and the value of coordination number (CN) of central metal ion in all these compounds, respectively, is:
1. Geometrical isomerism, CN = 2
2. Optical isomerism, CN = 4
3. Ionisation isomerism, CN = 4
4. Solvate isomerism, CN = 6
Subtopic: Isomerism in Coordination Compounds |
85%
From NCERT
NEET - 2023
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The \(\Delta_0\) value of \([Ni(H_2O)_6]^{2+}\) is \(8500 ~cm^{-1}\) . The \(\Delta_0\) values for \([NiCl_6]^{4-}\) and \([Ni(NH_3)_6]^{2+}\) compared to \([Ni(H_2O)_6]^{2+}\)are:
1. Higher and lower, respectively
2. Lower and higher, respectively
3. Higher in both complex ions
4. Lowering both complex ions
1. Higher and lower, respectively
2. Lower and higher, respectively
3. Higher in both complex ions
4. Lowering both complex ions
Subtopic: VBT, CFT & their Limitations |
77%
From NCERT
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Two isomers X and Y with the formula Cr(H2O)5ClBr2 were taken for an experiment on depression in the freezing point. It was found that one mole of X gave depression corresponding to 2 moles of particles and one mole of Y gave depression due to 3 moles of particles. The structural formula of X and Y respectively, are:
1. [Cr(H2O)5Cl] Br2; [Cr(H2O)4Br2]Cl.H2O
2. [Cr(H2O)5Cl] Br2; [Cr(H2O)3ClBr2].2H2O
3. [Cr(H2O)5Br]BrCl; [Cr(H2O)4ClBr]Br.H2O
4. [Cr(H2O)4Br2]ClH2O; [Cr(H2O)5Cl]Br2
Subtopic: Werner’s Theory |
69%
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Identify the outer orbital complex among the following options.
(Atomic number Mn=25, Fe=26, Co=27, Ni=28)
1. [Fe(CN)6]4-
2. [Mn(CN)6]4-
3. [Co(NH3)6]3+
4. [Ni(NH3)6]2+
Subtopic: VBT, CFT & their Limitations |
76%
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For a metal ion in an octahedral field, the correct electronic configuration is:
| 1. | \( t_{2 \mathrm{~g}}^4 e_g^0 \text { when } \Delta_O<P\) |
| 2. | \(e_{2 \mathrm{~g}}^2 t_g^2 \text { when } \Delta_O<\mathrm{P} \) |
| 3. | \(\mathrm{t}_{2 \mathrm{~g}}{ }^3 \mathrm{e}_{\mathrm{g}}{ }^1 \text { when }{\Delta}_{\mathrm{O}}<\mathrm{P}\) |
| 4. | \(\mathrm{t}_{2 \mathrm{~g}}{ }^3 \mathrm{e}_{\mathrm{g}}{ }^1 \text { when }{\Delta}_{\mathrm{O}}>\mathrm{P}\) |
Subtopic: VBT, CFT & their Limitations |
74%
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