The Element Tellurium

Tellurium is a semiconductor with the ability to increase the conductivity slightly with exposure to light. This element was discovered by Franz Joseph in gold ores. Tellurium is an extremely rare element on Earth and belongs to the element family called chalcogens. Tellurium can be doped with copper, gold, silver, tin, or other metals. When burned, Tellurium gives a greenish-blue flame in normal air and forms tellurium dioxide as result.

Tellurium is mostly used for alloying with other metals. Tellurium is also used for; ceramics, chalcogenide glasses, blasting caps, optical discs such as rewritable CDs and DVDs, and memory chips for computers.

 


Atomic Number & Chemical Properties


Element Basics:

Chemical Symbol: Te
Atomic Number: 52
Atomic Weight: 127.6
Element Classification: Semimetallic
Discovered By: Franz Joseph Meller von Reichenstein
Date of Discovery: 1782 (Romania)
Origin of Name: Latin: tellus (earth).

How to Recognize it at a Party:

Silvery-white, brittle semimetal

Seriously Atomic Information:

Density (g/cc): 6.24
Melting Point (°K): 722.7
Boiling Point (°K): 1263
Atomic Radius (pm): 160
Atomic Volume (cc/mol): 20.5
Covalent Radius (pm): 136
Ionic Radius: 56 (+6e) 211 (-2e)
Pauling Negativity Number: 2.1
First Ionizing Energy (kJ/mol): 869.0
Oxidation States: 6, 4, 2
Electronic Configuration: [Kr] 4d10 5s2 5p4

Getting Intimate with Tellurium:

Lattice Structure: Hexagonal (HEX)
Lattice Constant (Å): 4.450
Lattice C/A Ratio: 1.330
Specific Heat (@20°C J/g mol): 0.201
Fusion Heat (kJ/mol): 17.91
Evaporation Heat (kJ/mol): 49.8
Thermal Conductivity (@25°C W/m K):
Debye Temperature (°K): n/a


Society's Questions About Tellurium:

Have you ever wondered what everyone else in the world thinks about Tellurium? Is anyone else looking for it too? If so, why? What do they want?

The following list shows the most common online questions about the element Tellurium. Are your questions the same or different from everyone else's?

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