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A metal complex having the composition C...

A metal complex having the composition `Cr(NH_3)_4Cl_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 whereas B gives a pale yellow precipitate soluble in concentrated ammonia.
The hybridization of Cr in the complexes A and B, respectively, is

A

`d^2sp^3 and sp^3d^2`

B

`sp^3 d^2 and d^2 sp^3`

C

`sp^3 d and dsp^3`

D

`d^2 sp^3 and d^2 sp^3`

Text Solution

Verified by Experts

The correct Answer is:
D
As in boht the complexs Cr is in + 3 oxidation state so it undergoes `d^2sp^3` hybridization and the geometry is octahedral.
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Knowledge Check

  • A metal complex having the composition Cr(NH_3)_4Cl_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 whereas B gives a pale yellow precipitate soluble in concentrated ammonia. The oxidation state of Cr in complex A is

    A
    `+1`
    B
    `+2`
    C
    `+3`
    D
    0

  • A metal complex having the composition Cr(NH_3)_4Cl_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 whereas B gives a pale yellow precipitate soluble in concentrated ammonia. The formula of the complex B is

    A
    `[Cr(NH_3)_4 Br] Cl_2`
    B
    `[Cr(NH_3)_4ClBr]Cl`
    C
    `[Cr(NH_3)_4Cl_2]Br`
    D
    `[Cr(NH_3)_4]BrCl_2`

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    A
    Linkage isomerism
    B
    lonization isomerism
    C
    Coordinate isomerisi
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    Geometrical isomerism

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