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Tellurium-130 (Te-130)
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Contact usPhysical and chemical properties
| Melting point | 722.66 K (449.51 °C, 841.12 °F) | |||
| Boiling point | 1261 K (988 °C, 1810 °F) | |||
| Density when liquid (at m.p.) | 5.70 g/cm3 | |||
| Heat of fusion | 17.49 kJ/mol | |||
| Heat of vaporization | 114.1 kJ/mol |
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| Molar heat capacity | 25.73 J/(mol·K) | |||
product description
Naturally occurring tellurium has eight isotopes. Six of those isotopes, 120Te, 122Te, 123Te, 124Te, 125Te, and 126Te, are stable. The other two, 128Te and 130Te, are slightly radioactive,with extremely long half-lives, including 2.2 × 1024 years for 128Te. This is the longest known half-life among all radionuclides and is about 160 trillion (1012) times the age of the known universe.
A further 31 artificial radioisotopes of tellurium are known, with atomic masses ranging from 104 to 142 and with half-lives of 19 days or less. Also, 17 nuclear isomers are known, with half-lives up to 154 days. Except for beryllium-8 and beta-delayed alpha emission branches in some lighter nuclides, tellurium (104Te to 109Te) is the second lightest element with isotopes known to undergo alpha decay, antimony being the lightest.
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