Periodic table of elements

59 - Praseodymium [Pr]

59: Praseodymium - Praseodymium [Pr]
Group: 3
Period: 6
Atomic number: 59
Atomic mass: 140.90765
Configuration: [Xe] 4f36s2
Atomic radius: 247 pm
Covalent radius: 203 pm
Electron affinity: 50 eV
Ionization energy: 5.473 eV
Electronic term: 4I9/2
Mass fraction in the earth crust: 0.0000086
Mass fraction in the earth space: 0.000000002
Electronegativity: 1.13

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