Selenium
Atom properties
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REAL
intelligence since 2016
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Radii
Van der Waals atomic radius (pm):
190 [8]
Empirical atomic radius (pm):
115 [8]
Covalent atomic radius (pm):
120(4) [8]
Ionic radius (Å):
Se(-II): 1.98 [1]
Se(IV): 0.50 [1]
Se(VI): 0.42 [1]
Electronegativity
Pauling Scale:
2.55 [8]
Allen Scale:
2.424 [8]
Electron binding forces
Electron Affinity (eV):
2.021 [8]
Ionization Energy (eV):
9.752 [8]
Electron configuration
Ground state:
1s
2
-2s
2
-2p
6
-3s
2
-3p
6
-3d
10
-4s
2
-4p
4
[8]
