| Property | Value |
|---|---|
| Atomic number | 52 |
| Atomic weight | 127.603 amu |
| Element family | Semi-metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 120Te: 0.096%, 122Te: 2.603%, 124Te: 4.816%, 125Te: 7.139%, 126Te: 18.952% |
| Previous element | Antimony |
| Next element | Iodine |
| Density | 6.232 g/cm3 (STP) |
| Melting | 449.65 °C |
| Boiling | 990 °C |
| Covalent radius | 1.36 Å |
| Van der Waals radius | 2.06 Å |
| Ionic radius | 0.97 Å |
| First ionization potential | 9.009 eV |
| Electron affinity | 1.971 eV |
| Electronegativity | 2.1 |
| Discovery year | 1782 |
| Sample reactions |
|---|
| Te + H2O = TeO + H2 |
Tellurium is an element number 52 from semi-metals family. Its symbol is Te. Tellurium atomic weight is 127.603 amu. Te stable and long lived isotopes are 120Te: 0.096%, 122Te: 2.603%, 124Te: 4.816%, 125Te: 7.139%, 126Te: 18.952%. Tellurium electronic configuration is 1s22s22p63s23p63d104s24p64d105s25p4. Sample compounds that contain Tellurium are TeF4, H2Te, CdTe, Mg3TeS5, Bi2Te3, TeO2.
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