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Iron carbonyl, Fe(CO)5 is...

Iron carbonyl, `Fe(CO)_5` is

A

tetranuclear

B

mononuclear

C

trinuclear

D

dinuclear

Text Solution

Verified by Experts

The correct Answer is:
B
`[Fe(CO)_5]` is mononuclear in nature.
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In metal carbonyls, there is synergic bonding interaction between metal and carbon monoxide. This leads to increase in strength of metal ligands bond and decrease in bond order of CO in carbonyl complex as compared to bond order in carbon monoxide. Simple carbonyls are invariably spin-paired complexes except for vanadium metal. Which one of the following metal carbonyls are inner orbital complexes with diamagnetic property ? (P) Ni(CO)_(4)" "(Q) Fe(CO)_(5) (R ) V(CO)_(6)" "(S) Cr(CO)_(6) Select the correct answer from the codes given below :

DINESH PUBLICATION-CO-ORDINATION COMPOUNDS -Select the correct answers
  1. The type of isomersim shown by the complex [CoCl(2) (en)(2)] is

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

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  3. Iron carbonyl, Fe(CO)5 is

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  4. Which of the following is a pair of diamagnetic complexes ?

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  5. The oxidation state of Cr in [Cr(NH(3))(4)Cl(2)]^(+) is:

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  6. The correct increasing order of trans-effect of the following species ...

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  7. In the separation of Cu^(2+) and Cd^(2+) of Iind group in qualitative ...

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  8. Which of the following complex ions is diamagnetic ?

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  9. When 0.01 mole of a cobalt complex is treated with excess of silver ni...

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  10. The ratio of magnetic moment (spin only value) between [FeF(6)]^(3-) a...

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  11. Consider the following two complex ions : [CoF(6)]^(3-) and [Co(C(2)O(...

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  12. [Cr(H2 O)6]Cl3 (at no. of Cr = 24) has a magnetic moment of 3.83 B.M. ...

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  13. According to Werner's theory, the primary valencies of the central met...

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  14. A complex compound of Cu^(3+) with molecular formula CoCl(x).yH(2)O gi...

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  15. Which of the following complexes are not correctly matched with the hy...

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  16. Complex [CoCl(2)(en)(2)]^(+) can

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  17. The complexes [Co(NH(3))(6)][Cr(CN)(6)] and [Cr(NH(3))(6)][Co(CN)(6)] ...

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  18. Which of the following ligands can exhibit linkage isomerism ?

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  19. Which complex gives three chloride ions per formula unit ?

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  20. In the complex CoCl(3).4NH(3)

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