42
Mo
Molybdenum
Transition metal period 5 group 6 d-block discovered: 1778
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 42
- Atomic mass
- 95.95 a.m.u.
- Electron configuration
- [Kr]5s1 4d5
- Electronegativity
- 2.16 on the Pauling scale
- Atomic radius
- 209 pm
- Ionization energy
- 7.092 eV
- Electron affinity
- 0.746 eV
- Oxidation states
- +6
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid
- Melting point
- 2896 K (2 622,85 °C)
- Boiling point
- 4912 K (4 638,85 °C)
- Density
- 10.2 g/cm³