selenium
Instance URI: http://resource.geosciml.org/classifier/cgi/commodity-code/selenium
Within scheme: South Australian Commodity Codes
Selenium is a chemical element with symbol Se and atomic number 34. It is a nonmetal with properties that are intermediate between those of its periodic table column-adjacent chalcogen elements sulfur and tellurium. It rarely occurs in its elemental state in nature, or as pure ore compounds.