Tellurium

Statistics:

• Name: Tellurium
• Symbol: Te
• Classification: Metalloid
• Atomic Number: 52
• Atomic Mass: 127.6 g/mol
• Density: 6.25 g/cm³
• Melting: 449.6°C
• Boiling: 990°C
• Protons & Electrons:52
• Neutrons:76
• Discovered: 1782
• Discovered By: von Reichenstein
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Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 18
• Level 4: 18
• Level 5: 6

Isotopes:

Isotope: Half-life

• ¹¹⁹Te: 16.03 hours
• ¹²⁰Te: stable
• ¹²¹Te: 16.78 days
• ¹²¹Te: 154 days
• ¹²²Te: stable
• ¹²³Te: 1e+13 years
• ¹²³Te: 119.7 days
• ¹²⁴Te: stable
• ¹²⁵Te: stable
• ¹²⁵Te: 57.40 days
• ¹²⁶Te: stable
• ¹²⁷Te: 9.35 hours
• ¹²⁷Te: 109 days
• ¹²⁸Te: 2.2e24 years
• ¹²⁹Te: 69.6 minutes
• ¹²⁹Te: 33.6 days
• ¹³⁰Te: 7.9e20 years
• ¹³¹Te: 25.0 minutes
• ¹³¹Te: 30 hours
• ¹³²Te: 3.204 days

Brief Summary

Tellurium is a Metalloid with the symbol 'Te' and contains 52 Protons & Electrons with 76 neutrons in the nucleus of the atom. Tellurium has an atomic mass of 127.6 g/mol and, at a temperature of 20°C, has a density of 6.25 g/cm³. It will melt at a temperature of 449.6°C and boil at 990°C.

Tellurium was discovered by von Reichenstein in 1782 and is named 'Tellurium' Greek word "tellus" meaning "Earth".

Some common usages for Tellurium: coloring of glass and ceramics, thermoelectric devices.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Tellurium :: Te :: 52 - Chemical Element. 10 Mar. 2010 <http://www.chemicalelement.com/element/tellurium.html>.