Te | Z = 52 | ◊ ◊ ◊ ◊ ◊ |
Tellurium | |
From the Latin "Tellus", meaning "Earth" | ||||
(AM) Atomic Mass | 127.6 amu | ♦ | Oxidation States | +2, +4, +6, -2 |
(BP) Boiling Point | 989.8  °C | ♦ | (MP) Melting Point | 449.5 °C |
(ρ) Density | 6.24 g/cm3 | ♦ | Crystal Structure | Hexagonal |
( χ ) Electronegativity | 2.1 | ♦ | (AR) Atomic Radius | 1.35  Å |
Physical State | Solid | ♦ | (C) Heat Capacity | 0.202 J/g °C |
Electronic-Config | [Kr]  4d10  5s2  5p4  | ♦ | (I1) First Ionization E | 869.23 kJ/mol |
(ΔHvap) Heat of Vaporization | 114.1 kJ/mol | ♦ | (ΔHfus) Heat of Fusion | 17.49 kJ/mol |
Year of Discovery | 1782 | ♦ | Location of Discovery | 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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