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Question

Which of the following exhibit only +3 oxidation state?


A
U
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B
Th
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C
Ac
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D
Pa
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Solution

The correct option is C $$Ac$$
All are actinoids and electronic configuration of $$Ac$$ is so it shows only +3 oxidation state. Electronic configuration of actinium is $$6d^1 7s^2$$. It has only 3 electrons available to lose.

Chemistry

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