# 8.30 Which is the last element in the series of the actinoids? Write the electronic configuration of this element. Comment on the possible oxidation state of this element.

The last element of the actinoid series is Lawrencium ($Lr$). Its atomic number is 103. The electronic configuration of $Lr$ is $\dpi{100} [Rn]^{86}5f^{14}6d^{1}7s^{2}$.
The possible oxidation state of lawrencium is +3 because after losing 3 electrons it becomes a stable molecule.

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