Greenearth - Selenium Powder

Selenium is a chemical element with symbol Se and atmoic number 34. It is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arenic. It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust. Selenium has six naturally occurring isotopes. Black Selenium is a brittle, lustrous solid that is slightly soluble in CS2.