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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` has one metallic atom, hence it is mononuclear.
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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 :

ERRORLESS-COORDINATION COMPOUNDS-PAST YEARS QUESTIONS
  1. In a particular isomer of [Co(NH(3))(4)Cl(2)], the Cl-Co-Cl angle is 9...

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  2. The type of isomerism shown by the complex [CoCl(2)(en)(2)] is

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  3. Iron carbonyl, Fe(CO)5 is

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  4. The number of unpaired electrons in the complex ion [CoF(6)]^(3-) is

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  5. The d-electron configurations of Cr^(2+), Mn^(2+), Fe^(2+) and Co^(2+)...

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  6. Considering H2O as a weak field ligand, the number of unpaired electro...

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  7. In [Ag(CN)2]^(-), the number of pi bonds is

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  8. Which one of the following shows maximum paramagnetic character

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

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  10. Which of the following complex compounds will exhibit highest paramagn...

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  11. Which among the following is a paramagnetic complex

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  12. Which of the following is/are paramagnetic complex(es)?

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  13. Which of these statements about [Co(CN)6]^(3-) is true?

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  14. Which of the following is an inner orbital complex as well as diamagne...

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  15. Atomic numbers of Cr and Fe and 24 and 26 respectively, Which of the f...

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  16. Which of the following complexes exhibits the highest paramagnetic beh...

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  17. Red precipitae is obtained when ethanol solution of dimethylglyoxime i...

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  18. Pick out the correct statement with respect to [Mn(CN)(6)]^(3-):

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  19. Which one of the following ions exhibits d-d transition and paramagnet...

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

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