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Which is the last element of actinoid se...

Which is the last element of actinoid series ? Write the electronic configuration of this element. Comment on the posible oxidation state of this element.

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Last element is Lawrencium (Lr). Electronic configuration : `[Rn]5f^(14)6d^(1)7s^(2)`. It loses three electrons to achieve stable electronic configuration of `[Rn]5f^(14)`. Hence the possible oxidation state is + 3.
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