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 statementA. In CTML, no net reduction - oxidation takes place because of the short life time of excited state.B. `Cu_(2)O` is a red coloured salt.C. Vermilon `(HgS)` is a red coloured compound.D. All of these

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 correct statementA. In CTML, no net reduction - oxidation takes place because of the short life time of excited state.B. `Cu_(2)O` is a red coloured salt.C. Vermilon `(HgS)` is a red coloured compound.D. All of these
Answer» Correct Answer - D Conceptual

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