Correct statement among the following regarding NiCO4NiCN42- and NiCl42- is -

1.  NiCO4 and NiCl42- are diamagnetic and NiCN42- is paramagnetic

2.  NiCl42- and NiCN42- are diamagnetic and NiCO4 is paramagnetic

3.  NiCO4 and NiCN42- are diamagnetic and NiCl42- is paramagnetic

4.  NiCO4 is diamagnetic and NiCl42- and NiCN42- are paramagnetic

Subtopic:  VBT, CFT & their Limitations |
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Among the following statements, the correct statement is/are -

a.  NiH2O62+ and NiNH362+ have the same value of CFSE

b.  NiH2O62+ and NiNH362+ have the same value of the magnetic moment

c.  NiH2O62+ and NiNH362+ have the same hybridization of nickel

1.  a & c only

2.  b & c only

3.  a & b only

4. All of the above

Subtopic:  VBT, CFT & their Limitations |
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Which is the correct electronic configuration for the complex NiNH362+?

1.  t2g4 eg2

2.  t2g6 eg2

3.  t2g7 eg1

4.  t2g4 eg4

Subtopic:  VBT, CFT & their Limitations |
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A compound is made by mixing cobalt (III) nitrate and potassium nitrite solution in the ratio of 1 : 3. The aqueous solution of the compound showed 4 particles per molecule whereas molar conductivity reveals the presence of six electrical. charges. The formula of the compound is

1.  CoNO23 · 2KNO2

2.  CoNO23 · 3KNO2

3.  K3CoNO26

4.  KCoNO24

Subtopic:  Introduction, Classification and Nomenclature |
 71%
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0.001 mole of [CoNH35NO3 SO4] was passed through a cation exchanger and the acid coming out of it required 20 ml of 0.1 M NaOH for neutralization. Hence, the complex is

1.  CoNH35SO4NO3

2.  CoNH35 NO3SO4

3.  CoNH35SO4NO3SO4

4.  All of these

Subtopic:  Introduction, Classification and Nomenclature |
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Which of the following statements is correct regarding the chirality (optical isomerism) of the cis and a trans isomer of the type Maa2b2 (M stands for metal, aa is a bidentate ligand, and b is a chiral ligand)?

             

(1)  The trans form is achiral and optically inactive while the cis form is chiral and exists in two enantiomeric forms

(2)  Both cis and transforms are achiral and optically inactive

(3)  The transform is chiral and exists in two enantiomeric forms while the cis form is achiral and optically inactive

(4)  Both the cis and transform are chiral and each exists in two enantiomeric form

Subtopic:  Isomerism in Coordination Compounds |
 70%
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Which statement about the co-ordination number of a cation is true?

(1)  Metal ions exhibit only a single characteristic co-ordination number

(2)  The co-ordination number is equal to the number of ligands bonded to the metal atom

(3)  The co-ordination number is determined solely by the number of empty d-orbitals in the atom

(4)  Co-ordination number is equal to the number of coordinate bonds between the metal cation and ligands

Subtopic:  Ligands |
 62%
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If Cd2+ and Cu2+ both are present, both are complexed by CN- and H2S gas is passed, which one of the following pairs of complexes and their relative stability enables the separation of Cu2+ and Cd2+?

1.  K3CuCN4: more stable and K2CdCN4: less stable

2.  K2CuCN4: less stable and K2CdCN4: more stable

3.  K2CuCN4: more stable and K2CdCN4: more stable

4.  K3CuCN4: less stable and K2CdCN4: more stable

Subtopic:  Introduction, Classification and Nomenclature |
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The spin-only magnetic moments of MnCN64- and MnBr42- in Bohr Magnetons, respectively, are

1.  5.92 and 5.92

2.  4.89 and 1.73

3.  1.73 and 5.92

4.  1.73 and 1.73

Subtopic:  VBT, CFT & their Limitations |
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The crystal field stabilization energies (CFSE) of high spin and low spin d6 metal complexes in terms of 0, respectively are

1.  -0.4 and -2.4

2.  -2.4 and -0.4

3.  -0.4 and 0.0

4.  -2.4 and 0.0

 

 

Subtopic:  VBT, CFT & their Limitations |
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