Atomic Properties of Te
- Atomic Number of Te
- 52
- Atomic Mass of Te
- 127.6000 u
- Electron Configuration
- [Kr] 4d10 5s2 5p4
- Electronegativity
- 2.10
- Block
- p-block
- Group
- 16
- Period
- 5
Tellurium (Te) is element 52 on the periodic table. Atomic mass of Te: 127.6000 u. Te is in period 5, group 16. Melting point of Te: 722.66 K.Density of Te: 6.24 g/cm³.
The rare metalloid that gives you garlic breath for weeks
Tellurium has no known biological role. Tellurium compounds cause garlic breath that lasts for weeks.
Discovered by Franz Müller von Reichenstein in Romania, 1782
Name origin: Latin: tellus (earth).
Silvery metalloid element of group 16. Eight natural isotopes, nine radioactive isotopes. Used in semiconductors and to a degree in some steels. Chemistry is similar to Sulphur. Discovered in 1782 by Franz Miller.
Tellurium has 8 naturally occurring isotopes.
| Isotope | Atomic Mass (u) | Abundance | Half-Life | Decay Mode |
|---|---|---|---|---|
| 12052Te (Te-120)Tellurium-120 isotope | 119.9040593 | 0.0900% | — | — |
| 12252Te (Te-122)Tellurium-122 isotope | 121.9030435 | 2.550% | — | — |
| 12352Te (Te-123)Tellurium-123 isotope | 122.9042698 | 0.8900% | — | — |
| 12452Te (Te-124)Tellurium-124 isotope | 123.9028171 | 4.740% | — | — |
| 12552Te (Te-125)Tellurium-125 isotope | 124.9044299 | 7.070% | — | — |
| 12652Te (Te-126)Tellurium-126 isotope | 125.9033109 | 18.84% | — | — |
| 12852Te (Te-128)Tellurium-128 isotope | 127.9044613 | 31.74% | — | — |
| 13052Te (Te-130)Tellurium-130 isotope | 129.9062227 | 34.08% | — | — |
Data source: NIH PubChem (aggregated from IUPAC, NIST)
Isotopes of Tellurium have important real-world applications in science and industry.
The double beta decay of 130Te (with a half-life of 7×1020 years) has been used for the determination of gas-retention ages of tellurium minerals [382].
Used to improve the machining quality of copper and stainless steel products and to color glass and ceramics. Also in thermoelectric devices. Some is used in the rubber industry and it is a basic ingredient in manufacturing blasting caps.
Obtained as a by-product of copper and lead refining.
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