# The Crystal Field Stabilisation Energy (CFSE) and the 'spin only' magnetic moment of $$\mathrm{[FeF_6]^{3-}}$$ ion respectively, are: 1. $$0~\Delta~\text{and}~5.9~\text{BM}$$ 2. $$0~\Delta~\text{and}~1.73~\text{BM}$$ 3. $$2.0~\Delta~\text{and}~5.9~\text{BM}$$ 4. $$2.0~\Delta~\text{and}~1.73~\text{BM}$$

Subtopic:  VBT, CFT & their Limitations |
63%
From NCERT
NEET - 2024
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Match List -I with List-II
 List -I (Complex ion) List -II (Hybridisation) A. $$[\mathrm{Ni}(\mathrm{CN})_4]^{2-}$$ I. $$s p^3$$ B. $$\mathrm{[CoF_6}]^{3-}$$ II. $$d^2sp^3$$ C. $$[\mathrm{Co}(\mathrm{C}_2 \mathrm{O}_4)_3 ]^{3-}$$ III. $$s p^3d^2$$ D. $$\left(\mathrm{NiCl}_4\right)^{2-}$$ IV. $$dsp^2$$

Choose the correct answer from the options given below:
1. A-IV, B-III, C-II, D-I
2. A-III, B-I, C-IV, D-II
3. A-I, B-II, C-III, D-IV
4. A-III, B-IV, C-II, D-I
Subtopic:  VBT, CFT & their Limitations |
77%
From NCERT
NEET - 2024
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The correct 'spin only' magnetic moments of $$[\text{CoF}_6]^{3-}$$ and $$\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$$ respectively, are:

1, 0 BM and 4.9 BM
2. 0 BM and 0 BM
3. 4.9 BM and 0 BM
4. 4.9 BM and 4.9 BM
Subtopic:  VBT, CFT & their Limitations |
71%
From NCERT
NEET - 2024
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Given below are two statements :
 Statement I: $$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$$ is a homoleptic complex, whereas $$[Co(NH_3)_4 Cl_2]^+$$ is a heteroleptic complex. Statement II: Complex $$[Co(NH_3)_6]^{3+}$$ has only one kind of ligands but $$[Co(NH_3)_4 Cl_2]^+$$ has more than one kind of ligand
In light of the above statements, choose the correct answer from the options given below:
1. Both Statement I and Statement II are False.
2. Statement I is True but Statement II is False.
3. Statement I is false but Statement II is True.
4. Both Statement I and Statement II are True.
Subtopic:  Introduction, Classification and Nomenclature |
76%
From NCERT
NEET - 2024
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Given below are two statements :
 Statement I : Both $$\left[\text{Co}\left(\text{NH}_3\right)_6\right]^{3+}$$ and $$\left[\text{CoF}_6\right]^{3-}$$ Complexes are octahedral but differ in their magnetic behaviour. Statement II : $$\left[\text{Co}\left(\text{NH}_3\right)_6\right]^{3+}$$ is diamagnetic whereas $$\left[\text{CoF}_6\right]^{3-}$$ is paramagnetic.
In the light of the above statements, choose the correct answer from the options given below:
1. Both Statement I and Statement II are False.
2. Statement I is True and Statement II is False.
3. Statement I is False but Statement II is True.
4. Both Statement I and Statement II are True.
Subtopic:  VBT, CFT & their Limitations |
66%
From NCERT
NEET - 2024
Hints

Match List I with List II.
 List I (Complex) List II (Type of isomerism) A. $$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{NO}_2\right)\right] \mathrm{Cl}_2$$ I. Solvate isomerism B. $$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{SO}_4\right)\right] \mathrm{Br}$$ II. Linkage isomerism C. $$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]\left[\mathrm{Cr}(\mathrm{CN})_6\right]$$ III. Ionization isomerism D. $$\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3$$ IV. Coordination
Choose the correct from the options given below :
1. $$\text { A-I, B-III, C-IV, D-II }$$
2. $$\text { A-I, B-IV, C-III, D-II }$$
3. $$\text { A-II, B-IV, G-III, D-I }$$
4. $$\text { A-II, B-III,G-IV, D-I }$$
Subtopic:  Isomerism in Coordination Compounds |
68%
From NCERT
NEET - 2024
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Ethylene diaminetetraacetate ion is a/an :
 1 Hexadentate ligand 2 Ambidentate ligand 3 Monodentate ligand 4 Bidentate ligand
Subtopic:  Ligands |
78%
From NCERT
NEET - 2024
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Which of the following is not an ambidentate ligand?
 1 $$\mathrm{C_2O^{2-}_4}$$ 2 $$\mathrm{SCN}^-$$ 3 $$\mathrm{NO^{-}_2}$$ 4 $$\mathrm{CN}^-$$
Subtopic:  Ligands |
76%
From NCERT
NEET - 2024
Hints

$$[\mathrm{Mn}_2(\mathrm{CO})_{10}]$$ and $$[\mathrm{Co}_2(\mathrm{CO})_8]$$ structures have:

B. Terminal CO groups
C. Bridging CO groups
D. Metal in zero oxidation state
Choose the correct answer from the options given below:
1. Only A, B, C
2. Only B, C, D
3. Only A, C, D
4. Only A, B, D
Subtopic:  Organometallic Complexes & their Uses |
From NCERT
NEET - 2024
Hints

Type of isomerism exhibited by compounds
[Cr(H2O)6Cl3, [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 |
81%
From NCERT
NEET - 2023