Fe2(CO)9 is diamagnetic.Which of the following reasons is correct?

1. Presence of one CO as bridge group

2. Presence of monodentate ligand

3. Metal-metal(Fe-Fe) bond in molecule

4. Resonance hybridization of CO

Subtopic:  Organometallic Complexes & their Uses |
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Which does not obey EAN rule?

1. [Cu(NH3)4]2+

2. [Zn(OH)4]2-

3. [HgI4]2-

4. Fe(CO)5

Subtopic:  E.A.N |
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The coordination number and oxidation state of Cr in K3[Cr(C2O4)3] are respectively

1. 3 and +3

2. 3 and 0

3. 6 and +3

4. 4 and +2

Subtopic:  Werner’s Theory |
 71%
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The octahedral complex will not show geometrical isomerism is :
(A and B are monodentate ligands)

1. [MA4B2]

2. [MA5B]

3. [MA2B4]

4. [MA3B3]

Subtopic:  Isomerism in Coordination Compounds |
 78%
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According to IUPAC nomenclature sodium nitroprusside is named as

1. sodium pentacyanonitrosyl ferrate(II)

2. sodium pentacyanonitrosyl ferrate(III)

3. sodium nitroferricyanide

4. sodium nitroferrocyanide

Subtopic:  VBT, CFT & their Limitations |
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IUPAC name of [Pt(NH3)3(Br)(NO2)Cl]Cl is:

1. Triamminebromidochloridonitroplatinum(IV)Chloride
2. Triamminebromonitrocholoroplatinum(IV)Chloride
3. Triamminechlorobromonitroplatinum(IV)Chloride
4. Triamminenitrochlorobromoplatinum(IV)Chloride

Subtopic:  Introduction, Classification and Nomenclature |
 81%
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Which of the following cation does not form an amine complex with excess of ammonia?

1. Ag+

2. Cu2+

3. Cd2+

4. Na+

Subtopic:  Introduction, Classification and Nomenclature |
 54%
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The coordination number of cobalt in[Co(en)2Br2]Cl2 is:

1. 2

2. 4

3. 6

4. 8

Subtopic:  Werner’s Theory |
 69%
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Atomic number of Cr and Fe are respectively 24 and 26 which of the following is paramagnetic with the spin of electron?

1. [Cr(CO)6]

2. [Fe(CO)5]

3. [Fe(CN)6]4-

4. [Cr(NH3)6]3+

Subtopic:  VBT, CFT & their Limitations |
 62%
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Which compound among the following does not exhibit paramagnetism?

1. [Cu(NH3)4]Cl2

2. FeO

3. NO

4. N2O4

Subtopic:  VBT, CFT & their Limitations |
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