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Explain why [Ti (H2O)6]^(3+) is violet w...

Explain why `[Ti (H_2O)_6]^(3+)` is violet while `[Ti (H_2O)_6]^(4+)` is colourless.

Text Solution

Verified by Experts

`Ti` has electrónic configuration : `[Ar]^(18) 3d^2 4s^2`

With one electron in 3d-Subshell in `Ti^(3+)`, d-d transitions are possible and hence it is coloured with electron 3d-subshell

In `Ti^(4+)`, d-d transitions are not possible and hence it is colourless.
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[Ti (H_2O)_6]^(3+) is coloured while [Sc(H_2O)_6]^(3+) is colourless. Explain.

[Sc(H_2O)_6]^(3+) is colourless while [Ti (H_2O)_6]^(3+) is coloured. Justify.

Knowledge Check

  • [Ti(H_2O)6]^(3+) is paramagnetic in nature due to

    A
    one unpaired electron
    B
    two unpaired electrons
    C
    three unpaired electrons
    D
    no unpaired electrons

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