- Atomic Radius (Å)
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.
59
Atomic Number
140.91
Atomic Mass (u)
1204.15
Melting Point (K)
3793
Boiling Point (K)
6.77
Density (solid: g/cm³, gas: g/liter)
2.7
Atomic Radius (Å)
2.03
Covalent Radius (Å)
1.13
Electronegativity
5.47
First Ionization Energy (eV)
93
Electron Affinity
6
Number of Shells
2, 8, 18, 21, 8, 2
Electron Shell Occupations
0.19
Specific Heat (J/g)