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 incorrect statement `:`A. d- block metal ions are usually colouredB. Colour of d- block metal ions is generally due to d-d transitionC. All the complexes of Cu^(+)` are colourless on account of diamagnetic nature `(d^(10)` configuration ).D. `CrO_(3)` is bright orange due to CTLM.

Transition metals usually from coloured complexes and d-d transitions

1.	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 incorrect statement `:`A. d- block metal ions are usually colouredB. Colour of d- block metal ions is generally due to d-d transitionC. All the complexes of Cu^(+)` are colourless on account of diamagnetic nature `(d^(10)` configuration ).D. `CrO_(3)` is bright orange due to CTLM.
Answer» Correct Answer - C Conceptual

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