59Pr
Praseodymium
프라세오디뮴 · プラセオジム
Lanthanide
Atomic number59
ElementPr — Praseodymium
Atomic mass140.91
CategoryLanthanide
Group3
Period6
Electron config[Xe] 4f3 6s2
Shells2,8,18,21,8,2
State (RT)Solid
Melting pt935°C
Boiling pt3520°C
Electronegativity1.13
Discovered1885
Main usesStrong magnets, glass coloring
2 · 8 · 18 · 21 · 8 · 2
Group 3
Sc ScandiumY YttriumLa LanthanumCe CeriumNd NeodymiumPm PromethiumSm SamariumEu EuropiumGd GadoliniumTb TerbiumDy DysprosiumHo HolmiumEr ErbiumTm ThuliumYb YtterbiumLu LutetiumAc ActiniumTh ThoriumPa ProtactiniumU UraniumNp NeptuniumPu PlutoniumAm AmericiumCm CuriumBk BerkeliumCf CaliforniumEs EinsteiniumFm FermiumMd MendeleviumNo NobeliumLr Lawrencium