Te | Z = 52 | ◊ ◊ ◊ ◊ ◊ |
Tellurium | |
From the Latin "Tellus", meaning "Earth" | ||||
(AM) Atomic Mass | 127.6 amu | ♦ | ![]() |
+2, +4, +6, -2 |
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989.8  °C | ♦ | ![]() |
449.5 °C |
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6.24 g/cm3 | ♦ | ![]() |
Hexagonal |
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2.1 | ♦ | ![]() |
1.35  Å |
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Solid | ♦ | (C) Heat Capacity | 0.202 J/g °C |
Electronic-Config | [Kr]  4d10  5s2  5p4  | ♦ | ![]() |
869.23 kJ/mol |
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114.1 kJ/mol | ♦ | ![]() |
17.49 kJ/mol |
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1782 | ♦ | ![]() |
Romania |
(E°) Standard Potential | Te ⇔ Te2- (-1.143 V) | |||
Stable isotopes |  120Te,  122Te,  124Te,  125Te,  126Te | |||
Discovered/Synthesized by | Franz Joseph Müller von Reichenstein | |||
Natural Source | Isolated by the recoverey in processing copper ores | |||
Common Uses | Alloys, semiconductors, photocopiers, computer disk, thermo-electric coolers and generators | |||
Other Info | Only element that easily forms minerals with gold Te-128 has the longest half-life of any unstable isotope |
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