Selenium is a nonmetal with semiconductor properties and biological importance as a component of selenoproteins.
Properties of Selenium | It exists in several allotropes, has photoconductive behavior in certain forms and participates in redox chemistry.
Uses of Selenium | Used in glassmaking, electronics, pigments and as a nutritional supplement in small amounts; sourced from sulfide ores and refining byproducts.
Isotopes of Selenium | Stable isotopes include Se 74 to Se 82; selenium is essential at trace levels but toxic in excess and handled per safety guidelines.