About: http://webisa.webdatacommons.org/442569726

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	., chlorine bromine, iodine); and n1 is 1 when M is a hydrogen atom or an ammonium group and n1 is the valence of the metal when M is a metal atom.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com