Name : Molybdenum Symbol : Mo Atomic # : 42 Atom weight: 95.94 Melting P. : 2617 Boiling P. : 4612 Oxidation : +6 Pronounced : meh-LIB-deh-nem From : Greek molybdos, "lead" Identified : Carl Welhelm Scheele in 1778 Appearance : Silvery white, hard metal Note : Used extensively in warfare [Properties] Molybdenum can be described as a hard, silvery-white metal, but it is more often produced, stored, and used as a gray, powdery substance. Chemically it resembles a cross between chromium (Cr) and tungsten (W) - elements appearing directly above and below molybdenum on the periodic table of the elements.