Promethium
Atom properties
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Van der Waals atomic radius (pm):
236 [7]
Empirical atomic radius (pm):
185 [7]
Covalent atomic radius (pm):
199 [7]
Ionic radius (Å):
Pm(III): 0.97 (6-coordinate) [1]
Electronegativity
Pauling Scale:
Allen Scale:
Electron binding forces
Electron Affinity (eV):
Ionization Energy (eV):
5.55 [7]
Electron configuration
Ground state:
1s
2
-2s
2
-2p
6
-3s
2
-3p
6
-3d
10
-4s
2
-4p
6
-4d
10
-4f
5
-5s
2
-5p
6
-6s
2
[7]
