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Praseodymium (Pr)
Atomic number: 59 · Category: lanthanide · Group 3 · Period 6 · Phase: Solid
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.
Atomic mass: 140.907662
Density: 6.77
Melting point: 1208 K
Boiling point: 3403 K
Appearance: grayish white
Source: Wikipedia
Block: f
Molar heat: 27.2
CPK color:#d9ffc7
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f3
Configuration (semantic): [Xe] 4f3 6s2
Shells: 2, 8, 18, 21, 8, 2
Electronegativity (Pauling): 1.13
Electron affinity: 93
Ionization energies: 527, 1020, 2086, 3761, 5551
Periodic position
Group: 3
Period: 6
xpos: 5
ypos: 9
Spectral/Bohr images
Image
3D Model