Why is the highest oxidation state is exhibited in oxoanions of a transition metal and not in metal Flourides?

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Solution

Both oxygen and fluorine atoms are highly electronegative and have a very small size. Due to these properties, they are able to oxidise the metal to its highest oxidation state.
However, in case of oxoanions, oxygen is the oxidising agent which is capable to form multiple bond with metals whereas in metal fluorides, fluorine forms single bond with metals. This explains the superiority of oxygen as compare to fluorine.

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Similar questions

Give examples and suggest reasons for the following features of the transition metal chemistry:

(i)The lowest oxide of transition metal is basic, and the highest is amphoteric/acidic.

(ii) A transition metal exhibits the highest oxidation state in oxides and fluorides.

(iii) The highest oxidation state is exhibited in the oxoanions of a metal.

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Select the correct statements(s) with respect to oxides and oxoanions of transition metals.

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