Tellurium (pronounced /tɪˈlʊəriəm, tɛ-/ te-LOOR-ee-əm) is a chemical element that has the symbol Te and atomic number 52. A brittle, mildly toxic, silver-white metalloid which looks similar to tin, tellurium is chemically related to selenium and sulfur. Tellurium is primarily used in alloys and as a semiconductor.
Tellurium belongs to the same chemical family as oxygen, sulfur, selenium, and polonium: the chalcogen family.
When crystalline, tellu...
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Tellurium
Chemical Element
The 52nd Element in the Periodic Table
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Antimony
Antimony (pronounced /ˈæntɨmɵnɪ/ AN-ti-mo-nee) is a chemical element with the symbol Sb (Latin: stibium, meaning "mark") and atomic number 51. A...
Symbol:
- Te
Atomic mass:
| Mass | Uncertainty |
|---|---|
|
|
Electrons per shell:
- 2,8,18,18,6
Electron affinity:
| Value | Uncertainty |
|---|---|
|
|
Electronegativity (Pauling scale):
- 2.1
Atomic radius:
- 140 pm (0.00000551 )
Covalent radius:
- 1.35 pm (5.31E-8 )
Van der Waals radius:
- 210 pm (0.00000827 )
Isotopes:
- Tellurium-129
- Tellurium-128
- Tellurium-127
- Tellurium-126
- Tellurium-130
- Tellurium-120
- Tellurium-121
- Tellurium-122
- Tellurium-123
- Tellurium-124
Melting Point:
- 449.57 °C (841.23 °F )
Boiling Point:
- 987.85 °C (1810.1 °F )
Periodic table block:
Ionization Energy:
- 9.0096 eV (0.0000090096 MeV )
Discovery Date:
- 1782
Discovering Country:
Electron Configuration:
- Kr 4d10 5s2 5p4