About: http://webisa.webdatacommons.org/278443253

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	All elements have isotopes and the number ranges from three for hydrogen to over 30 for elements such as caesium and barium.
http://www.w3.org/ns/prov#wasQuotedFrom	wikibooks.org