42 Mo

Transition metal

Molybdenum

Strengthens high-temp steel.

See it in the interactive periodic table

Properties of Molybdenum

Atomic number (Z)
42
Symbol
Mo
Atomic mass
95.95 g/mol
Category
Transition metal
Group
6
Period
5
Electron configuration
[Kr] 4d⁵ 5s¹
Electronegativity (Pauling)
2.16
Atomic radius
190 pm
First ionization energy
684 kJ/mol
Melting point
2896 K (2622.8 °C)
Boiling point
4912 K (4638.9 °C)
Density
10.22 g/cm³
Phase at 25 °C
Solid
Discovered
Discovered in 1781
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