Assertion: silicon's electron | /r/HasProperty | free
Facets:
value: relatively
type: DEGREE
Source sentences:
text: Pure silicon is not a conductor because there are no free electrons; all the electrons are tightly bound to neighboring atoms.
text: Substituting a phosphorus atom (with five valence electrons) for a silicon atom in a silicon crystal leaves an extra, unbonded electron that is relatively free to move around the crystal.
text: These electrons, called free carriers, then wander randomly around the crystalline lattice looking for another hole to fall into and carrying an electrical current.