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Oxidation States of Actinides

The members o...

Question

The members of Actinoid series exhibit larger number of oxidation states as compared to lanthanoid elements.

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Solution

Actinides exhibit larger oxidation states than lanthanides, because of the very small energy gap between 5f, 6d and 7s subshells. Thus, the outermost electrons get easily excited to the higher energy levels, giving variable oxidation states.

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Q. Explain the following observations :
(i) Many of the transition elements are known to form interstitial compounds.
(ii) There is a general increase in density from titanium (Z = 22) to copper (Z = 29).
(iii) The members of the actinoid series exhibit lager number of oxidation states than the corresponding members of the lanthanoid series.

Q. The main reason for larger number of oxidation states exhibited by the actinoids than the corresponding lanthanoids, is:

Q. Name the members of the lanthanoid series which exhibit

+ 4

oxidation states and those which exhibit

+ 2

oxidation states. Try to correlate this type of behaviour with the electronic configurations of these elements.

Q. Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being :

The actinoids exhibit more number of oxidation states in general than lanthanoids because:

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Oxidation States of Actinides

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