Assertion: thorium | /r/HasProperty | electropositive metal
Facets:
value: with four valence electrons
type: OTHER
value: very
type: DEGREE
value: ahead of cerium
type: OTHER
Source sentences:
text: He determined that thorium was a very electropositive metal, ahead of cerium and behind zirconium in electropositivity.
text: It is electropositive element with four valence electrons.
text: Thorium is an electropositive actinide whose chemistry is dominated by the +4 oxidation state; it is quite reactive and can ignite in air when finely divided.