[Ln (III) compounds are ge...] Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the

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Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is incorrect?

The ionic sizes of Ln (III) decrease in general with increasing atomic number

Ln (III) compounds are generally colourless

Ln (III) hydroxides are mainly basic in character

Because of the large size of the Ln (III) ions the bonding in its compounds is predominantly ionic in character

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