Assertion: metal's electron | /r/CapableOf | become mobile
Facets:
value: in a solid
type: MANNER
Source sentences:
text: Metallic bonding may be seen as a consequence of a material having many more delocalized energy states than it has delocalized electrons (electron deficiency), so localized unpaired electrons may become delocalized and mobile.
text: In a solid, electrons can become mobile if the electrons can be promoted to unfilled orbitals in the conduction band of the solid.