Iron

Atom properties
Content created by REAL intelligence since 2016


Radii


Van der Waals atomic radius (pm): 194 [10]
Empirical atomic radius (pm): 140 [10]
Covalent atomic radius (pm): low-spin: 132(3) [10]
high-spin: 152(6) [10]
Ionic radius (Å): Fe(VI): 0.25 (4-coordinate) [1]
Fe(IV): 0.585 (6-coordinate) [1]
Fe(III): 0.55 (6-coordinate, low-spin) [1]
Fe(III): 0.645 (6-coordinate, high-spin) [1]
Fe(II): 0.61 (6-coordinate, low-spin) [1]
Fe(II): 0.78 (6-coordinate, high-spin) [1]


Electronegativity


Pauling Scale: 1.83 [10]
Allen Scale: 1.8 [10]


Electron binding forces


Electron Affinity (eV): 0.163 [10]
Ionization Energy (eV): 7.902 [10]


Electron configuration


Ground state: 1s2-2s2-2p6-3s2-3p6-3d6-4s2 [10]