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3D Bohr-model representation of the Tellurium atom (symbol Te, atomic number Z=52). Electron shell configuration: 2, 8, 18, 18, 6 electrons.
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Bohr model · educational
Electron configuration
Full1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁴
Short[Kr] 4d¹⁰ 5s² 5p⁴
Valence electrons6
KLMNOPQ shells
K2
L8
M18
N18
O6
Electronegativity
Pauling2.1
Allen2.158
Mulliken (eV)—
Atomic radii
Empirical140 pm
Calculated123 pm
Covalent138 pm
Van der Waals206 pm
Ionic radii (Shannon-Prewitt)
-2221 pm
Successive ionisation energies
I₁869.3 kJ/mol
I₂1790 kJ/mol
I₃2698 kJ/mol
I₄3610 kJ/mol
I₅5668 kJ/mol
Electron affinity190.2 kJ/mol
Oxidation states
-2-1+1+2+3+4+5+6
Bold states = most common.