Spin-only magnetic moments of [Fe(NH3)6]3+ and [FeF6]3-  in BM are, respectively :

1. 1.73 and 1.73 2. 5.92 and 1.73
3. 1.73 and 5.92 4. 5.92 and 5.92

Subtopic:  VBT, CFT & their Limitations |
 65%
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In an aqueous solution, CoH2O62+ (X) reacts with molecular oxygen in the presence of excess liquor NH3 to give a new complex Y. The number of unpaired electrons in X and Y are, respectively

1. 3, 1

2. 3, 0

3. 3, 3

4. 7, 0 

Subtopic:  VBT, CFT & their Limitations |
 56%
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The energies of dxy and dz2 orbitals in octahedral and tetrahedral transition metal complexes are such that

1. Edxy > Edz2 in both tetrahedral and octahedral complexes

2. Edxy < Edz2 in both tetrahedral and octahedral complexes

3. Edxy > Edz2 in tetrahedral but Edxy < Edz2 in octahedral complexes

4. Edxy < Edz2  in tetrahedral but Edxy > Edz2 in octahedral complexes   

Subtopic:  VBT, CFT & their Limitations |
 74%
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The geometry and the number of the unpaired electron(s) of \([MnBr_{4}]^{2-}\), respectively, are:

1. Tetrahedral and 1 2. Square planar and 1
3. Tetrahedral and 5 4. Square planar and 5 
Subtopic:  Isomerism in Coordination Compounds |
 77%
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The complex that can exhibit optical activity among the following is:

1. [CoCl6]3-

2. [Co(en)CI4]-

3. cis-[Co(en)2Cl2]+

4. trans-[Co(en)2Cl2]+ 

Subtopic:  Isomerism in Coordination Compounds |
 82%
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2.335 g of compound X (empirical formal CoH12N4Cl3) upon treatment with excess AgNO3 solution produces 1.435 g of a white precipitate. The primary and secondary valences of cobalt in compound X, respectively are:

[Given Atomic mass: Co = 59, Cl = 35.5, Ag = 108]

1. 3, 6 2. 3, 4
3. 2, 4 4. 4, 3
Subtopic:  Introduction, Classification and Nomenclature |
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The geometry and magnetic property of NiCl42-, respectively, are

1.  Tetrahedral, Paramagnetic

2.  Tetrahedral, Diamagnetic

3.  Square planar, Paramagnetic

4.  Square planar, Diamagnetic  

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 78%
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Among
(i) [Cr(en)3]3+
(ii) trans-[Cr(en)2Cl2]+
(iii) cis-[Cr(en)2Cl2]+
(iv) [Co(NH3)4Cl2]+
the optically active complexes are-

1. (i), (ii) and (iii)

2. (i) and (iii)

3. (ii) and (iii)

4. (ii) and (iv)

Subtopic:  Isomerism in Coordination Compounds |
 74%
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Among the following complexes, the one that can exist
as facial(fac) and meridional(mer) isomer is:

1. [Co(NO2)3(NH3)3] 2. K3[FeCN6]
3. [Co(H2O)2(NH3)4]CI3 4. [CoCl(NH3)5]CI

Subtopic:  Isomerism in Coordination Compounds |
 84%
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The total number of geometrical isomers possible for an octahedral complex of MA2B2C2 are:
(M = transition metal; A, B and C are monodentate ligands)

1. 3 2. 4
3. 5 4. 6
Subtopic:  Isomerism in Coordination Compounds |
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