Transition and InnerTransition Elements - Result Question 4

####4. The highest possible oxidation states of uranium and plutonium, respectively, are

(2019 Main, 10 April II)

(a) 7 and 6

(b) 6 and 7

(c) 6 and 4

(d) 4 and 6

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Solution:

  1. Actinoids show a variety of oxidation states due to comparable energies of 5f,6d and 7s energy levels.

In the actinoids family (5f-block), uranium (U) neptunium (Np), plutonium (Pu) and americium (Am) have highest possible oxidation states of +6,+7,+7 and +6 respectively.



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