Assertion: metal's form | /r/CapableOf | create inconsistency
Facets:
value: in the treatment of thorium
type: OTHER
Source sentences:
text: The form with lanthanum under yttrium also creates an inconsistency in the treatment of thorium, which has no f-electrons in the ground-state (being [Rn]6d27s2), similar to actinium as [Rn]6d17s2; yet it places thorium in the f-block but not actinium.