The Periodic Table of Elements
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59
Pr
Praseodymium
Summary
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.
Block: f
Period: 6
Group: 3
Atomic Mass: 140.908 g/mol (amu)
Discovered By: Carl Auer von Welsbach
Phase: Solid
Boiling Point: 3403 K
Melting Point: 1208 K
Type: lanthanide
Density: 6.77 g/cm3
Electron Configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f3
Electron Configuration (Semantic): [Xe] 4f3 6s2