59Solid
Pr 140.908 Atomic mass · uLanthanides
Praseodymium
Praseodymium is a chemical element with symbol Pr and atomic number 59. Praseodymium is a soft, silvery, malleable and ductile metal in the lanthanide group. It is valued for its magnetic, electrical, chemical, and optical properties.
Discovery 1885 (Carl Auer von Welsbach)
K2L8M18N21O8P2
Physical properties
Values for the element in its standard state.
- Density
- 6.64g/cm³
- Melting point
- 1,204K
- Boiling point
- 3,563K
- Atomic radius
- Not available
- Bonding type
- Metallic
- Molar heat
- 27.2J/(mol·K)
Inside the atom
Electron arrangement and the energy behind its behavior.
Full electron configuration
1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 6 electrons; 3d, 10 electrons; 4s, 2 electrons; 4p, 6 electrons; 4d, 10 electrons; 5s, 2 electrons; 5p, 6 electrons; 4f, 3 electrons; 6s, 2 electrons;
[Xe] represents 54 core electrons. The full view shows them explicitly.
59 electrons Orbital order preserved from source
- Electronegativity
- 1.13Pauling scale
- First ionization energy
- 527kJ/mol
- Electron affinity
- 50kJ/mol
- Van der Waals radius
- Not available
Pr PraseodymiumAtomic number 59
527kJ/mol
Atomic numberGaps indicate unavailable data
About praseodymium
- Appearance
- Grayish white
- Discovery
- 1885 (Carl Auer von Welsbach)
- Data source
- Read the reference
A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.