Osmium
Block dPeriod 6Group 8solid at 20 °C
Configuration :[Xe] 4f¹⁴ 5d⁶ 6s²
Atomic mass :190.23 u
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Modèle de Bohr · pédagogique
Electron configuration
Full[Xe] 4f¹⁴ 5d⁶ 6s²
Short[Xe] 4f¹⁴ 5d⁶ 6s²
Valence electrons8
KLMNOPQ shells
K2
L8
M18
N32
O14
P2
Electronegativity
Pauling2.2
Allen—
Mulliken (eV)—
Atomic radii
Empirical130 pm
Calculated185 pm
Covalent144 pm
Van der Waals—
Ionic radii (Shannon-Prewitt)
+463 pm
Successive ionisation energies
I₁840 kJ/mol
I₂1600 kJ/mol
Electron affinity106.1 kJ/mol
Oxidation states
-4-2-10+1+2+3+4+5+6+7+8
Bold states = most common.