Assertion: gray arsenic | /r/HasProperty | semimetal
Facets:
Source sentences:
text: Gray arsenic is a semimetal, but becomes a semiconductor with a bandgap of 1.2–1.4 eV if amorphized.
text: Gray arsenic is a semimetal , but becomes a semiconductor with a bandgap of 1.2–1.4 eV if amorphized.