a toxic nonmetallic element related to sulfur and tellurium occurs in several allotropic forms a stable gray metallike allotrope conducts electricity better in the light than in the dark and is used in photocells occurs in sulfide ores (as pyrite)
सल्फर और टेलुरियम से संबंधित एक विषैले गैर-तत्विक तत्व कई एलोोट्रोपिक रूपों में होता है