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The D-And-f-Block Elements

Question

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

Solution

Oxygen is strong oxidising agent due to its high electronegtivity and smaller size.
because of these properties Oxygen are able to oxidise the metal to its highest oxidation state.
for example CrO₄^2- shows +6 oxidation state.

Some More Questions From The d-And-f-Block Elements Chapter

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

Which is a stronger reducing agent Cr²⁺ or Fe²⁺ and why?

Explain why Cu⁺ ion is not stable in aqueous solutions?

Actinoid contraction is greater from element to element than lanthanoid contraction. Why?

On what ground can you say that scandium (Z = 21) is a transition element but zinc (Z = 30) is not?

The outer electronic configuration of copper is 3d¹⁰ 4s¹, yet it is considered transition element. Why?

Why the melting points of transition elements are high?

Why Zn, Cd and Hg are not regarded as transition elements?

Name the first element of 3rd transition series.

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