Assertion: metal's electron | /r/HasProperty | bound
Facets:
value: afterwards
type: TEMPORAL
value: too strongly
type: MANNER
value: loosely
type: MANNER
Source sentences:
text: Metallic properties increase down groups as decreasing attraction between the nuclei and the outermost electrons causes the outermost electrons to be loosely bound and thus able to conduct heat and electricity.
text: Most lanthanides can use only three electrons as valence electrons, as afterwards the remaining 4f electrons are too strongly bound: cerium is an exception because of the stability of the empty f-shell in Ce4