Assertion: boron | /r/HasProperty | 12 c
Facets:
Source sentences:
text: The substance can be seen with empirical formula B 12 C 3 (i.e., with B 12 dodecahedra being a motif), but with less carbon, as the suggested C 3 units are replaced with C-B-C chains, and some smaller (B 6 ) octahedra are present as well (see the boron carbide article for structural analysis).