Selenium

SeSe or selenium, refers to a toxic nonmetallic element relate... or seleniumSe or selenium, refers to a toxic nonmetallic element relate..., refers to a toxic nonmetallic element related to sulphur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulphide ores (as pyrite). The atomic number for seleniumSe or selenium, refers to a toxic nonmetallic element relate... is 34