Molybdenum? you say. I know you all knew that that atomic number of Molybdenum is, of course, 42!
Molybdenum (Mo) from the Greek meaning "lead-like", is a refractory metallic element used principally as an alloying agent in steel, cast iron, and superalloys to enhance hardenability, strength, toughness, and wear and corrosion resistance.
The world's largest producers of molybdenum materials are the United States, Canada, Chile, Russia, and China. Molybdenum was discovered in 1778 by Carl Wilhelm Scheele and first isolated in 1781 by Peter Jacob Hjelm.