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Transition metal compound are coloured d...

Transition metal compound are coloured due to `d-d` and charge transfer tranditoins, Colour due to `d-d` transition is shown by transition metal compounds having `d^(1) and d^(9)` electrons whereas the compounds containing `d^(0) and d^(10)` configurations are intensely coloured due to charge transfer transitions.
Which of the following compound is not coloured

A

`Na_(2)CuCl_(4)`

B

`Na_(2)CdCl_(4)`

C

`K_(4)Fe(CN)_(6)`

D

`K_(3)Fe(CN)_(6)`

Text Solution

Verified by Experts

The correct Answer is:
B
`Na_(2)CdCl_(4)` contains `Cd^(2+)` which has `4d^(10)` configuration and thus colourless.
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Transition metal compound are coloured due to d-d and charge transfer tranditoins, Colour due to d-d transition is shown by transition metal compounds having d^(1) and d^(9) electrons whereas the compounds containing d^(0) and d^(10) configurations are intensely coloured due to charge transfer transitions. The purple colour of [Ti(H_(2)O_(6))]^(3+) ion is due to

The compounds which are coloured only due to charge transfer are :

Transition metal ions containing (n-1)d^(0) or (n-1)d^(10) configuration are only coloured.

Which of the following compounds is(are) coloured due to charge transfer spectra and not due to d - d transitions?

Which of the following compounds are coloured due to charge transfer spectra?

Knowledge Check

  • Transition metal compound are coloured due to d-d and charge transfer tranditoins, Colour due to d-d transition is shown by transition metal compounds having d^(1) and d^(9) electrons whereas the compounds containing d^(0) and d^(10) configurations are intensely coloured due to charge transfer transitions. For the same transition metal ion, the colour of its compounds will depend upon

    A
    ` Na_2CdCl_2`
    B
    Pressure of the reaction
    C
    Nature of ligands or Lewis bases attached to the metal ion
    D
    Concentration of the ligands

  • Transition metal compound are coloured due to d-d and charge transfer tranditoins, Colour due to d-d transition is shown by transition metal compounds having d^(1) and d^(9) electrons whereas the compounds containing d^(0) and d^(10) configurations are intensely coloured due to charge transfer transitions. The purple colour of [Ti(H_(2)O_(6))]^(3+) ion is due to

    A
    Unpaired d-electron
    B
    Transfer of an electron
    C
    Intermolecular vibrations
    D
    Presence of water molecules

  • The compounds which are coloured only due to charge transfer are

    A
    `KMnO_4`
    B
    `K_2Cr_2 O_7`
    C
    `Fe(OH)_3`
    D
    `Cr(OH)_2`