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A metal comples having composition Cr(NH...

A metal comples having composition `Cr(NH_(3))_(4)CI_(2)Br` has been isolated in two forms A and B. The form A reacts with `AgNO_(3)` to give a white precipitate readily soluble in dilute aqueous ammonia, where as B gives a plae yellow precipitate soluble in concentrated ammonia. The hybridisation of Cr in A and magnetic momentum in B are respectively

A

`d^(2)sp^(3),2.8BM`

B

`sp^(3)d^(2),3.8MB`

C

`d^(2)s^(3),3.8BM`

D

`sp^(3)d^(2),2.8BM`

Text Solution

Verified by Experts

The correct Answer is:
B
(A) : `Cl^(-1)` ion must be out of co-ordination sphere to react with `AgNO_(3)`.
`[Crunderset((A))((NH_(3))_(4)BrCl](sp^(3)d^(2)),[Crunderset((B))((NH_(3))_(4)Cl_(2))]Br(3.8Bm)`
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AAKASH SERIES-CO-ORDINATION COMPOUNDS-LEVEL-II LECTURE SHEET EXERCISE-I (Single & One or more than One Correct Answers )
  1. Which of the following statement(s) is (are) correct?

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  2. For [Fe(CN)(6)]^(4-).[Ni(CN)(4)]^(2-)and[Ni(CO)(4)]. Correct statement

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  3. Which have octahedral shape (d^(2)sp^(3)) hybridisation of central ato...

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  4. Which possesses tetrahedral shape (sp^(3)- hybridisation of central at...

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  5. Which of the following complexes is a chelate ?

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  6. A complex shown below can exhibit :

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  7. Which of the following compounds can exhibit geometrical isomerism?

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  8. Which of the following isomerisms are exhibited by [Cr(NH(3))(2)(OH)(2...

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  9. Which of the following statements is not true about the complex ion [C...

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  10. Which of the following statement(s) is/are incorrect?

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  11. Which of the following statements is/are true ?

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  12. Which of the following statement is true about the complex [CrCl(3)(OH...

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  13. Which of the following pairs show coordination isomerism ?

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  14. A metal comples having composition Cr(NH(3))(4)CI(2)Br has been isolat...

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  15. In poly nuclear metal carbonyls, the hybridisation of 'C' in terminal ...

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  16. Which is high spin complex :

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  17. A d-block element forms octahedral complex but its magnetic moment rem...

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  18. For which of the following d^(n) configuration of octahedral complex(e...

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  19. Select the correct statement

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

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