Assertion: astatine | /r/HasAspect | dark or lustrous appearance
Facets:
Source sentences:
text: Astatine is likely to have a dark or lustrous appearance and may be a semiconductor or possibly a metal; it probably has a higher melting point than that of iodine.
text: " to "Astatine is likely to have a dark or lustrous appearance and be either a semiconductor or a metal, and it will probably have a higher melting point than iodine.