Pr
Praseodymium
59
Atomic Number: 59
Atomic mass: 140.907652
Ionization energy: 527
Electronaffinity: -50
Covalent radius:
Calculated radius: 247
Empirical radius: 185
Vanderwaals radius:
Electronegativity: 1.13
Density: 6.64
Oxidation states: 2, 3, 4
Melting point: 1204
Boiling point: 3563
Electron configuration: [Xe] 4f3 6s2
Element group: 6
Element period: 8

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