Assertion: metal's compound | /r/HasProperty | lewis acids
Facets:
Source sentences:
text: Given its high charge-to-size ratio, boron bonds covalently in nearly all of its compounds; the exceptions are the borides as these include, depending on their composition, covalent, ionic, and metallic bonding components.[n 27] Simple binary compounds, such as boron trichloride are Lewis acids as the formation of three covalent bonds leaves a hole in the octet which can be filled by an electron-pair donated by a Lewis base.
text: The compounds are Lewis acids, somewhat akin to the better known aluminium trihalides.