52 · Te
Tellurium
Observed by Müller von Reichenstein in 1782 and named by Klaproth in 1798.
Identity
- Atomic number
- 52
- Symbol
- Te
- Canonical name
- Tellurium
- Category
- metalloid
- Group
- 16
- Period
- 5
- Block
- p
Properties
These quantities come from the Periodic Table JSON compilation. They have not yet been checked, one by one, against CIAAW atomic weights or NIST measurements. A value marked estimated is not a measurement.
- Atomic mass
- 127.603 u
- Electron configuration
- [Kr] 4d10 5s2 5p4
- Electrons per shell
- 2, 8, 18, 18, 6
- Standard state
- solid
- Density
- 6.24 g/cm³
- Melting point
- 722.66 K
- Boiling point
- 1,261 K
- Electronegativity
- 2.1 Pauling
- First ionization energy
- 869.3 kJ/mol
- Electron affinity
- 190.161 kJ/mol
History
A new metal in a gold ore
Observation · confirmed · 1782
Müller von Reichenstein shows that a Transylvanian ore is neither antimony nor bismuth.
The name tellurium
Naming · confirmed · 1798
Klaproth confirms the element and names it.
Etymology
- Theme
- celestial body
- Language
- latin
- Root
- tellus
- Meaning
- the Earth
Scientists
Places and institutions
- Berlin — historical setting : Prussia, then Germany — present country : Germany
See also
Sources
- IUPAC, Periodic Table of the Elements
- Bowserinator, Periodic Table JSON. Compilation secondaire d’où viennent les grandeurs physiques importées (masse, densité, températures, énergies). Elles ne sont pas revérifiées une à une auprès du NIST ou de la CIAAW.
- John Emsley, Nature’s Building Blocks: An A–Z Guide to the Elements