Tellurium

Document v1 · published by Koskamo · updated 2026-10-04

Tellurium (Te) is chemical element 52, a metalloid in group 16, period 5 (PubChem).

Atomic number: 52
Symbol: Te
Group: 16
Period: 5
Atomic mass: 127.6 u
Electron configuration: [Kr]5s2 4d10 5p4
Electronegativity (Pauling scale): 2.1
Atomic radius (van der Waals): 206 pm
Ionization energy: 9.010 eV
Electron affinity: 1.971 eV
Oxidation states: +6, +4, -2
Standard state: Solid
Melting point: 722.66 K
Boiling point: 1261 K
Density: 6.232 g/cm³
Chemical group: Metalloid
Year discovered: 1782

Source and provenance

Original source: pubchem.ncbi.nlm.nih.gov
Published on Koskamo by: Koskamo
Citation version: Document v1
Reuse: PubChem periodic table data (NIH/NLM, pubchem.ncbi.nlm.nih.gov/ptable); group and period from Jefferson Lab via PubChem

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Version history

Published by Koskamo2026-10-04
Version 1