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How Do You Prepare: Actinoid Elements Show Wide Range of Oxidation States. - Chemistry

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How do you prepare:

Actinoid elements show wide range of oxidation states.

Account for the following:

Actinoid elements show wide range of oxidation states.

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Solution

Actinides exhibit larger oxidation states because of very small energy gap between 5f, 6d and 7s sub-shells . The energies are calculated on the basis of (n+l) rule. The (n+l) values of the three orbitals are:

5 f = 5 + 3 = 8
6 d = 6 + 2 = 8
7 s = 7 + 0 = 7

Since, all the values are almost same, therefore all orbitals can involved in bonding resulting in larger oxidation number for actinoids.

Concept: F-block Elements - The Actinoids
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