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Tellurium

Atomic Symbol Te
Atomic Weight 127.60 g/mol
Element Number 52
Standard State Solid
Standard Type Strongly Basic
Date of Discovery 1782
Discoverer von Reichenstein
Oxidation States 4, -2,6
Boiling Point 1261 K
Melting Point 722.72 K
Density 6.24 g/cm³
Electron Configuration [Kr]4d10,5s2,p4
Acid/Base Properties Acidic
Crystal Structure Hexagonal
Electronegativity 2.1
Heat of Vaporization 50.63 kJ/mol
Heat of Fusion 17.49 kJ/mol
Electrical Conductivity 2x10e-4 10^6omg-¹cm-¹
Thermal Conductivity 2.35 Wm-¹K-¹ (at 300 K)
Specific Heat Capacity 0.202 Jg-¹K-¹ (at 300 K)
First Ionization Potential 9.009
Atomic Volume 20.50 cm³/mol
Atomic Radius 1.42 Å
Covalent Radius 1.36 Å
Synthetic No

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