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The D-And-f-Block Elements

Question

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Why is Ce⁴⁺ in aqueous solution is good oxidising agent.

Solution

Electronic configuration of Cerium is 4f¹ 5d¹ 6s² ,
the most stable state of cerium is +3.
Thus, Ce⁴⁺ is good oxidising agent because it can readily chagne to the most stable +3 oxidation state by gaining one electron.

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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