PERIODIC ELEMENT
Te (Tellurium)

 



Atomic number : 52
Atomic mass : 127.6 g.mol-1
Electronegativity according to Pauling : 2.1
Density : 6.24 g.cm-3
Melting point : 450 °C
Boiling point : 1390 °C
Vanderwaals radius : 0.137 nm
Ionic radius : 0.221 nm (-2) ; 0.089 (+4)
Isotopes : 23
Electronic shell : [Kr] 4d105s2 5p4
Energy of first ionisation : 869 kJ.mol-1
Standard potential : - 0.91 V (Sb3+/ Sb)
Discovered by : Franz Muller von Reichenstein in 1782
 
Atomic Structure Uses (Coloring of glass and ceramics, thermoelectric devices)