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3D Bohr-model representation of the Mercury atom (symbol Hg, atomic number Z=80). Electron shell configuration: 2, 8, 18, 32, 18, 2 electrons.
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Bohr model · educational
Electron configuration
Full1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s²
Short[Xe] 4f¹⁴ 5d¹⁰ 6s²
Valence electrons12
KLMNOPQ shells
K2
L8
M18
N32
O18
P2
Electronegativity
Pauling2
Allen—
Mulliken (eV)—
Atomic radii
Empirical150 pm
Calculated171 pm
Covalent132 pm
Van der Waals155 pm
Ionic radii (Shannon-Prewitt)
+2102 pm
Successive ionisation energies
I₁1007.1 kJ/mol
I₂1810 kJ/mol
I₃3300 kJ/mol
Electron affinity—
Oxidation states
-2+1+2
Bold states = most common.