Periodic Table of Elements showing Tellurium metalloid elements





Tellurium

ElementTellurium
SymbolTe
Atomic Number52
Molar Mass127.6 gmol-1
Electron Configuration[Kr]4d105s25p4
Normal Statesolid metalloid
Density @STP6.24 g cm-3
Melting Point450oC
Boiling Point988oC
Stable Isotopes120Te, 122Te, 123Te, 124Te, 125Te, 126Te, 128Te, 130Te
Atomic Radius137 pm
Ionic Radius221 (2-) pm
Electronegativity (Pauling)2.1
Ionization Energy (1st)869 kJ mol-1
Ionization Energy (2nd)1795 kJ mol-1
Ionization Energy (3rd)2698 kJ mol-1
Molar Heat Capacity25.7 J K-1mol-1
Standard Molar Entropy49.7 J K-1mol-1
Enthalpy of Fusion13.5 kJ mol-1
Enthalpy of Vapourization50.63 kJ mol-1
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