The geometry and magnetic behaviour of the complex [Ni(CO)4] respectively are:

1. Square planar and diamagnetic

2. Tetrahedral and diamagnetic

3. Square planar and paramagnetic

4. Tetrahedral and paramagnetic

Subtopic:  VBT, CFT & their Limitations |
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Which of the following has the longest C ­—O bond length? (Free C—O bond length in CO is 1.128 )

1. [Co(CO)4]-
2. [Fe(CO)4]2-
3. Mn(CO)6]+
4. Ni(CO)4
Subtopic:  VBT, CFT & their Limitations |
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Which of the following has longest C ­—O bond length? (Free C—O bond length in CO is 1.128 )

1. [Co(CO)4]-
2. [Fe(CO)4]2-
3. Mn(CO)6]+
4. Ni(CO)4
Subtopic:  VBT, CFT & their Limitations |
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Iron carbonyl, FeCO5 is:

1. Tetranuclear

2. Mononuclear

3. Trinuclear

4. Dinuclear

Subtopic:  Organometallic Complexes & their Uses |
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The type of isomerism shown by the complex [CoCl2(en)2]+ is:
1. Geometrical isomerism
2. Coordination isomerism
3. Ionization isomerism
4. Linkage isomerism
Subtopic:  Isomerism in Coordination Compounds |
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Pick out the correct statement with respect to [Mn(CN)6]3-

1. It is sp3d2 hybridised and tetrahedral

2. It is d2sp3 hybridised and octahedral

3. It is dsp2 hybridised and square planar

4. It is sp3d2 hybridised and octahedral

Subtopic:  VBT, CFT & their Limitations |
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Jahn-Teller effect is not observed in high spin complexes of

1.  d7

2.  d8

3.  d4

4.  d9

Subtopic:  VBT, CFT & their Limitations |
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The correct increasing order of trans-effect of the following species is

1.  NH3>CN->Br>C6H5-

2.  CN->C6H5->Br->NH3

3.  Br->CN->NH3>C6H-5

4.  CN->Br->C6H-5>NH3

Subtopic:  Ligands |
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What is the correct increasing order for the wavelengths of absorption in complexes of Co3+?

1. [Co(H2O)6]3+ < [Co(en)3]3+ < [Co(NH3)6]3 +

2. [Co(H2O)6]3+ <  [Co(NH3)6]3+ <  [Co(en)3]3+

3. [Co(NH3)6]3+ < [Co(en)3]3+ < [Co(H2O)6]3+

4. [Co(en)3]3+ <  [Co(NH3)6]3+ < [Co(H2O)6]3+

Subtopic:  VBT, CFT & their Limitations |
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An example of a sigma bonded organometallic compound is:

1. Grignard's reagent

2. Ferrocene

3. Cobaltocene

4. Ruthenocene

Subtopic:  Organometallic Complexes & their Uses |
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