Periodic table of elements

61 - Promethium [Pm]

61: Promethium - Promethium [Pm]
Group: 3
Period: 6
Atomic number: 61
Atomic mass: 145
Configuration: [Xe] 4f56s2
Atomic radius: 205 pm
Covalent radius: 199 pm
Electron affinity: 50 eV
Ionization energy: 5.582 eV
Electronic term: 6H5/2
Mass fraction in the earth crust: 0
Mass fraction in the earth space: 0
Electronegativity: 1.1

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