The metal carbonyl which is paramagnetic is:

1. NiCO4 2. VCO6
3. CrCO6 4. FeCO5

Subtopic:  VBT, CFT & their Limitations |
 67%
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When any solution passes through a cation exchange resin that is in acidic form,H+ ion of the resin is replaced by cations of the solution. A solution containing 0.319 g of an isomer with molecular formula CrCl3.6H2O is passed through a cation exchange resin in acidic form. The eluated solution requires 19 cm3 of 0.125 N NaOH. The isomer is
 
1.  Triaquatrichloro chromium(lll) chloride trihydrate
 
2.  Hexaaqua chromium(lll) chloride
 
3.  Pentaaquamonochloro chromium(lll) chloride monohydrate
 
4.  Tetraaquadichloro chromium(lll) chloride dehydrate
Subtopic:  Introduction, Classification and Nomenclature |
 55%
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Which of the following statements about ammonium cerium (IV) nitrate, NH42CeNO36 is incorrect?

1. NO3- acts as a monodentate ligand.
2. The Ce atom has a coordination number of 12.
3. The shape of the complex ion is an icosahedron.
4. The solution is used as an oxidizing agent.

Subtopic:  Ligands |
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Which one of the following reactions is correct?

1.  [Fe(CO)5]+2NO[Fe(CO)2(NO)2]+3CO

2.  [Fe(CO)5]+2NO[Fe(CO)3(NO)2]+2CO

3.  [Fe(CO)5]+3NO[Fe(CO)2(NO)3]+3CO

4. [Fe(CO)5]+3NO[Fe(CO)3(NO)3]+2CO

Subtopic:  Ligands |
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How many isomers are possible for complex [Co(Ox)2Cl2]3-

1.  1

2.  3

3.  2

4.  4

Subtopic:  Isomerism in Coordination Compounds |
 68%
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When excess of KCN is added to a solution of CuSO4, the final product obtained is,

1. K2[Cu(CN)4]

2. K3[Cu(CN)4]

3. CuCN

4. K[Cu(CN)2]

Subtopic:  Introduction, Classification and Nomenclature |
 56%
From NCERT
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The complex that can exhibit linkage isomerism is:

1. [Co(NH3)5H2O]Cl3 2. [Co(NH3)5(NO2)]Cl2
3. [Co(NH3)5NO3](NO3)2 4. [CO(NH3)5Cl]SO4
Subtopic:  Isomerism in Coordination Compounds |
 86%
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The IUPAC name of [Co(ONO)(NH3)5]Cl2 is: 

1.  Pentamminenitrocobalt(II)chloride

2.  Pentamminenitrsoocobalt(III)chloride  

3. Pentaaminenitrito-O-cobalt(III)chloride.  

4. Pentammineoxo-nitrocobalt(III)chloride

Subtopic:  Introduction, Classification and Nomenclature |
 78%
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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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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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