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 $5 f, 6 d$ and $7 s$ 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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