52Solid
Te 127.6 Atomic mass · uMetalloids
Tellurium
Tellurium is a chemical element with symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur.
Discovery 1782 (Franz-Joseph Müller von Reichenstein)
K2L8M18N18O6
Physical properties
Values for the element in its standard state.
- Density
- 6.24g/cm³
- Melting point
- 723K
- Boiling point
- 1,261K
- Atomic radius
- 135pm
- Bonding type
- Metallic
- Molar heat
- 25.73J/(mol·K)
Inside the atom
Electron arrangement and the energy behind its behavior.
Full electron configuration
1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 6 electrons; 3d, 10 electrons; 4s, 2 electrons; 4p, 6 electrons; 4d, 10 electrons; 5s, 2 electrons; 5p, 4 electrons;
[Kr] represents 36 core electrons. The full view shows them explicitly.
52 electrons Orbital order preserved from source
- Electronegativity
- 2.1Pauling scale
- First ionization energy
- 869kJ/mol
- Electron affinity
- 190kJ/mol
- Van der Waals radius
- 206pm
Te TelluriumAtomic number 52
869kJ/mol
Atomic numberGaps indicate unavailable data
About tellurium
- Appearance
- Not recorded
- Discovery
- 1782 (Franz-Joseph Müller von Reichenstein)
- Data source
- Read the reference
A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.