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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

The halides of transition elements become more covalent with increasing oxidation state of the metal. Why?

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प्रश्न

The halides of transition elements become more covalent with increasing oxidation state of the metal. Why?

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उत्तर

As the oxidation state of the element increases, its charge increases. To Fajans rules, as the charge of the metal ion increases covalent character increases because the positively charged cation attracts the electron cloud on the anion towards itself.

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पाठ 8: The d-and f-Block Elements - Multiple Choice Questions (Type - I) [पृष्ठ १११]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 8 The d-and f-Block Elements
Multiple Choice Questions (Type - I) | Q 49 | पृष्ठ १११

संबंधित प्रश्‍न

Which of the following cations are coloured in aqueous solutions and why ?

Sc3+, V3+, Ti4+, Mn2+ (At. Nos. Sc = 21, V = 23, Ti = 22, Mn = 25)


How would you account for the following: Transition metals form complex compounds.


To what extent do the electronic configurations decide the stability of oxidation states in the first series of the transition elements? Illustrate your answer with examples.


What may be the stable oxidation state of the transition element with the following d electron configuration in the ground state of its atom?

3d3


How would you account for the following:

Of the d4 species, Cr2+ is strongly reducing while manganese (III) is strongly oxidising.


Give reasons Iron has the higher enthalpy of atomization than that of copper.


Transition metals with lowest melting point is ______.


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(i) \[\ce{CrO3}\]

(ii) \[\ce{MoO3}\]

(iii) \[\ce{WO3}\]

(iv) \[\ce{CrO^{2-}4}\]


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Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following point:

Atomic sizes


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