The highest oxidation state of a transition metal is usually -160-exhibited in its oxide and fluoride-

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Standard XII

Chemistry

Introduction to d and f Block Elements

The highest o...

Question

The highest oxidation state of a transition metal is usually exhibited in its oxide and fluoride.

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Solution

The highest oxidation states of transition metals are shown by fluorides and oxides as fluorine and oxygen are the most electronegative elements.
The highest oxidation state shown by any transition metal is +8.

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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.

Q. Why is the highest oxidation state of a metal exhibited in its oxide or fluoride only?

Q. Transition metals exhibit variable oxidation states. It is because of:

Q. (a) Account for the following:
(i) Mn shows the highest oxidation state of +7 with oxygen but with fluorine it shows the highest oxidation state of +4.
(ii) Zirconium and Hafnium exhibit similar properties.
(iii) Transition metals act as catalysts.
(b) Complete the following equations:

\begin{matrix} (i) & 2 M n O_{2} & + & 4 K O H & + & O_{2} & △ - \to (i i) & C r_{2} O_{7}^{2 -} & + & 14 H^{+} & + & 6 I^{-} & - \to \end{matrix}

Highest oxidation state of manganese in fluoride is $+ 4 (M n F_{4}),$ but the highest oxidation state in oxides is $+ 7 (M n_{2} O_{7})$ because ____________.

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The highest oxidation state of a transition metal is usually exhibited in its oxide and fluoride.

The highest oxidation states of transition metals are shown by fluorides and oxides as fluorine and oxygen are the most electronegative elements.The highest oxidation state shown by any transition metal is +8.

The highest oxidation states of transition metals are shown by fluorides and oxides as fluorine and oxygen are the most electronegative elements.
The highest oxidation state shown by any transition metal is +8.