52Te127.6

Tellure

MetalloidsBlock pPeriod 5Group 16solid at 20 °C
Configuration :[Kr] 4d¹⁰ 5s² 5p⁴
Atomic mass :127.6 u
English :Tellurium
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Modèle de Bohr · pédagogique

Electron configuration

Full[Kr] 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.
Period 5Block pIUPAC Group 16Family Metalloids
Sources : NIST Atomic Weights & Isotopic Compositions, IUPAC Recommendations, CODATA. Methodology