Transition and InnerTransition Elements - Result Question 6
6. The maximum number of possible oxidation states of actinoides are shown by
(2019 Main, 9 April II)
(a) berkelium, (Bk) and californium (Cf)
(b) nobelium (No) and lawrencium (Lr)
(c) actinium (Ac) and thorium (Th)
(d) neptunium $(Np)$ and plutonium $(Pu)$
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Answer:
Correct Answer: 6. (d)
Solution:
The maximum number of possible oxidation states of actinoids are shown by neptunium $(Np)$ and plutonium $(Pu)$. These actinoids exhibit oxidation states of $+3,+4,+5$ and +6 .
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