Question

# Which of the following exhibit only +3 oxidation state?

A
U
B
Th
C
Ac
D
Pa

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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