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Among transition metals, the highest oxi...

Among transition metals, the highest oxidation state is exhibited in oxoanions of a metal. Explain.

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The oxoanions of metals have covalent nature in which oxygen is involved in the multiple bonding with the metal atom. This is responsible for the high oxidation state of the metal in oxoanions. Fore example, the element Mn exhibits +7 oxidation state in permanganate ion `(MnO_(4))^(-)`.
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DINESH PUBLICATION-D-AND -F BLOCK ELEMENTS-Additional Important Question
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  13. Why do transition metals form coloured complexes ?

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  16. Zn^(2+) salt are white while Cu^(2+) salts are blue. Assign reason.

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