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3D Bohr-model representation of the Polonium atom (symbol Po, atomic number Z=84). Electron shell configuration: 2, 8, 18, 32, 18, 6 electrons.
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Bohr model · educational
Electron configuration
Full1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p⁴
Short[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴
Valence electrons6
KLMNOPQ shells
K2
L8
M18
N32
O18
P6
Electronegativity
Pauling2
Allen—
Mulliken (eV)—
Atomic radii
Empirical190 pm
Calculated135 pm
Covalent140 pm
Van der Waals197 pm
Successive ionisation energies
I₁812.1 kJ/mol
Electron affinity—
Oxidation states
-2+2+4+5+6
Bold states = most common.