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Revert vandal
{{Element | name=Actinium | symbol=Ac | anumber=89 | amass=227.0 amu | noe=89 | class=Transition Metal | cstructure=Cubic | color=Silver | date=1899 | discname=[[Andre Debierne]] | origname=From the Greek ''aktinos''. | uses=Unknown | obtained=Unknown, as it is extremely rare. }}