Choose the incorrect statement

1.  In [FeCN6]4- Fe—C bond length is smaller than Fe—C bond length in  [FeCl6]4-

2.  The EAN of Fe in [FeCN6]4- is 36

3.  [FeCN6]3-more stable than [FeCN6]4-

4.  [FePhen3]3+is more stable than [FePhen3]2+

Subtopic:  Introduction, Classification and Nomenclature |
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A solution containing 0.319 g of complex CrCl3. 6H2O was passed through a cation exchanger and the solution given out was neutralized by 28.5 ml of 0.125 M NaOH. The correct formula of the complex will be [molecular weight of complex = 266.5]

1.  [CrCl(H2O)5]Cl2 · H2O

2.   [Cr(H2O)6]Cl3

3.  [CrCl2(H2O)4]Cl · H2O

4.  All are correct

Subtopic:  Introduction, Classification and Nomenclature |
 51%
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The oxidation state and effective atomic number of Cr in bis(benzene) chromium are

1.  0, 36

2.  3, 35

3.  2, 36

4.  2, 35

Subtopic:  Introduction, Classification and Nomenclature |
 57%
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Consider the following complexes

1.  K2PtCl6

2.  PtCl4, 2NH3

3.  PtCl4, 3NH3

4.  PtCl4, 5NH3

Their electrical conductance in aqueous solution respectively are

1.  256, 0, 97, 404

2.  404, 0, 97, 256

3.  256, 97, 0 ,404

4.  404, 97, 256, 0

Subtopic:  Introduction, Classification and Nomenclature |
 64%
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Zero magnetic moment of octahedral complex K2NiF6 is due to
1.  Low spin d6 Ni(IV) complex

2.  Low spin d8 Ni(ll) complex

3.  High spin d8 Ni(ll) complex

4.  High spin d6 Ni(IV) complex

Subtopic:  VBT, CFT & their Limitations |
 57%
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Which of the following statements is not correct?

1.  The complexes FeH2O62+ and FeCN64- differ in the state of hybridization of iron

2.  The complexes FeH2O62+ and FeCN64- differ in the magnetic properties

3.  iron ion has the same secondary valency in the complexes FeH2O62+ and  FeCN64-

4.   The complex FeH2O62+ and FeCN64- differ in primary valency of iron

Subtopic:  VBT, CFT & their Limitations |
 62%
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About CoNH36Cl2  and CoNH36Cl3, a correct match is

                                 CoNH36Cl3    CoNH36Cl2 

1.  Stability                less                     more

2.  Magnetism         Paramagnetic      Diamagnetic

3.  Hybridization       sp3d2                d2sp3

4.  Complex             Inner orbital       Outer orbital

Subtopic:  VBT, CFT & their Limitations |
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NiPPh34 and NiCl42-have geometry, hybridization and magnetic moments of the ions respectively

1.  Tetrahedral, tetrahedral; sp3, sp3; O, 2.82

2.  Tetrahedral, square planar; sp3, dsp2; O, 2.82

3.  Tetrahedral, octahedral; sp3, d2sp3; 2.82, O

4.  Square planar, tetrahedral; dsp2, sp3; 2.82, 2.82

Subtopic:  VBT, CFT & their Limitations |
 61%
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The geometries of Ni(CO)4 and [Ni(PPh3)2Cl2] are : 

1.  Both square planar.

2.  Tetrahedral and square planar, respectively.

3.  Both tetrahedral.

4.  Square planar and tetrahedral, respectively.

Subtopic:  VBT, CFT & their Limitations |
 59%
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which one of the following high spin complexes has the largest crystal field stabilization energy?

1.  CrH2O62+

2.  CrH2O63+

3.  MnH2O62+

4.  MnH2O63+

Subtopic:  VBT, CFT & their Limitations |
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