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Which of the following obey18e^(-)rule?...

Which of the following obey18`e^(-)`rule?

A

`Cr(CO)_(6)`

B

`Ni(CO)_(4)`

C

`Cr(C_(6)H_(6))_(2)`

D

`Fe(C_(5)H_(5))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
a,b,c,d
Consider outer electronic configuration.
Eg : `[Cr(CO)_(6)] : Cr(O) : d^(4) s^(2) , 6 + 6 xx 2 = 18 e^(-) C_(6) H_(6)` and `C_(5)H_(5)^(-)` are `6pi e^(-)` systems .
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The realtive stabilities of metal carbonyls and their ions can be explained on the basis of a rule which is known as 18e^(-) rule. If number of valence shell electrons of the metal + number of electrons donated by bonded CO groups comes to be 18 electrons, then carbonyl is said to be stable. Which of the following complexes are following 18e^(-) rule?

NARAYNA-COORDINATION COMPLEXES-Multiple Answer Questions
  1. Which of the following is/are correct?

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  2. The magnitude of crystal field stabilization energy depends on

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  3. Complex ions [NiCl(4)]^(2-),[Ni(CN(4)]^(2-) Similar in theior given ...

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  4. Select correct statement(s) regarding given complexes:

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  5. Complex compound [Co(SCN)(2)(NH(3))(4)]Cl exhibits:

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  6. Which of the following compound has/have effective atomic number equal...

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  7. K(2)[Ni(CN)(4)] underset(NH(3))overset("K in liq.")to"X' Regarding t...

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  8. Which one of the following statement(s) is/are false?

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  9. Which of the following is correct about Tetraamminedithiocyanato-s cob...

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  10. Select the correct statement

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  11. Which of the following obey18e^(-)rule?

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  12. Which of the following obey EAN rule?

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  13. Which of the following are four coordinated cpomplexes?

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  14. In Ni^(2+) octahedral complex ,which of the following ligands do not p...

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  15. Explain the following : (i) Low spin octahedral complexes of nicke...

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  16. which of the following exhibits optical activity?

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  17. The optically active complex are

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  18. Which is (are) correct statement (s) ?

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  19. which of the following is /are correct relations(s)?

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  20. Which of the following is /are correct aboout wikinson's catalst?

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