52
Te
127.6
Tellurium (Te)
Element 52 · Period 5 · Group 16
metalloid
solid at room temp
p-block
About Tellurium
Rare metalloid used in solar cells, thermoelectrics, and alloys.
Physical Properties
Atomic Mass
127.6 u
State at 25°C
Solid
Melting Point
449.51 °C
Boiling Point
988 °C
Density
6.24 g/cm³
Magnetism
Diamagnetic
Atomic Properties
Electron Configuration
[Kr] 4d¹⁰ 5s² 5p⁴
Electron Shells
2, 8, 18, 18, 6
Electronegativity
2.1
Atomic Radius
123 pm
Ionization Energy
869 kJ/mol
Oxidation States
-2, +4, +6
Discovery & History
Discovered By
Franz Joseph Müller von Reichenstein
Discovery Year
1782
Named By
Martin Heinrich Klaproth
Name origin: Latin: tellus (Earth)
Frequently Asked Questions
- Is Tellurium a metal, nonmetal, or metalloid?
- Tellurium is classified as a metalloid.
- What state is Tellurium in at room temperature?
- Tellurium is a solid at standard room temperature (25°C).
- What is the atomic mass of Tellurium?
- Tellurium has an atomic mass of 127.6 atomic mass units (u).
- Who discovered Tellurium?
- Tellurium was discovered by Franz Joseph Müller von Reichenstein in 1782.
- Where is Tellurium on the periodic table?
- Tellurium is element number 52, located in period 5 and group 16.