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Tl(OH)3 is less basic than TlOH. Why ?...

`Tl(OH)_3` is less basic than `TlOH`. Why ?

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`Tl(OH)_3` is less basic than TlOH, as the polarising power of `Tl^(3+)` is more than `Tl^(1+)`.
`Tl-O` bond in `Tl(OH)_3` becomes stronger than that in `TlOH.` As Tl-O bond becomes stronger, release of `OH^(-)` ion becomes less possible. Hence basic nature of `Tl(OH)_3` is less.
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