- Atomic Radius (Å)
Molybdenum is a chemical element with symbol Mo and atomic number 42. The name is from Neo-Latin molybdaenum, from Ancient Greek Μόλυβδος molybdos, meaning lead, since its ores were confused with lead ores. Molybdenum minerals have been known throughout history, but the element was discovered (in the sense of differentiating it as a new entity from the mineral salts of other metals) in 1778 by Carl Wilhelm Scheele.
42 Atomic Number
95.95 Atomic Mass (u)
2890.15 Melting Point (K)
4912 Boiling Point (K)
10.28 Density (solid: g/cm³, gas: g/liter)
2 Atomic Radius (Å)
1.54 Covalent Radius (Å)
2.16 Electronegativity
7.09 First Ionization Energy (eV)
72.1 Electron Affinity
5 Number of Shells
2, 8, 18, 13, 1 Electron Shell Occupations
0.25 Specific Heat (J/g)