Used to form cross-linked bridges in vulcanization, this element can expand its octet like its neighbor, phosphorus.
The drug rocecoxib contains an atom of this element double-bonded to two different oxygens and is better known by the trade name Vioxx. This element is harvested by forcing steam through the outermost of three concentric pipes and compressed air through the innermost, thus allowing the molten form of this element to rise through the third. The most stable form of this element, which is yielded by the Frasch (*) process, consists of either orthorhombic or monoclinic crystals of eight-atom cyclic molecules. Used to form cross-linked bridges in vulcanization, this element can expand its octet like its neighbor, phosphorus. For 10 points, name this element found directly below oxygen on the periodic table and symbolized S.
The drug rocecoxib contains an atom of this element double-bonded to two different oxygens and is better known by the trade name Vioxx.
{sulfur} [accept {S} before mention]