Molybdenum's symbol is Mo and it contains 42 protons and 42 electrons. It is a solid at its normal state and has a atomic mass of 96 grams. Molybdenum is a metal and its atomic number is 42. It belongs to the transition metal family on the periodic table. The melting point for Molybdenum is 2623 C. The boiling point for Molybdenum is 4639 C.The cost of molybdenum is $30,000 per 2,205 pounds. This metal was discovered by Carl William Scheele, and came from the origin of the Greek word "molybdos" meaning "lead".