Assertion: beryllium beryllium | /r/HasProperty | becl
Facets:
Source sentences:
text: Beryllium metal reacts chlorine, Cl 2 , or bromine, Br 2 , to form the beryllium dihalides beryllium (II) chloride, BeCl 2 , and beryllium (II) bromide, BeBr 2 , respectively.