Transition metals usually from coloured ...

Transition metals usually from coloured complexes and d-d transitions `(t_(2g)hArre_(g))` are responsible for colour as the energy difference between `t_(2g)` and `e_(g)` lies in visible region. But all the coloured ions are not dut to d-d transition but charge transfer bands also play important roles. Charge transfer bands may be of two types.
(i) ligand to metal (CTLM)`" "(ii)` metal to ligand (CTML).
Charge transfer transition always produces intense colour as compared to d-d transition.
`MnO_(4)^(-)` is dark purple coloured though Mn is in `(+VII)` oxidation state with `3d^(@)` configuration

due to d-d transition

due to CTML spectra

due to CTLM spectra

None of these

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Conceptual

Transition metals usually from coloured complexes and d-d transitions (t_(2g)hArre_(g)) are responsible for colour as the energy difference between t_(2g) and e_(g) lies in visible region. But all the coloured ions are not dut to d-d transition but charge transfer bands also play important roles. Charge transfer bands may be of two types. (i) ligand to metal (CTLM) " "(ii) metal to ligand (CTML). Charge transfer transition always produces intense colour as compared to d-d transition. Select the correct statement

In CTML, no net reduction - oxidation takes place because of the short life time of excited state.

`Cu_(2)O` is a red coloured salt.

Vermilon `(HgS)` is a red coloured compound.

All of these

d- block metal ions are usually coloured

Colour of d- block metal ions is generally due to d-d transition

All the complexes of Cu^(+)` are colourless on account of diamagnetic nature `(d^(10)` configuration ).

`CrO_(3)` is bright orange due to CTLM.

they absorb light

they emil light

they are paramagnetic

they exhibit d-d transition