Xenon

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

Xenon (Xe) is chemical element 54, a noble gas in group 18, period 5 (PubChem).

Atomic number: 54
Symbol: Xe
Group: 18
Period: 5
Atomic mass: 131.29 u
Electron configuration: [Kr]5s2 4d10 5p6
Electronegativity (Pauling scale): 2.6
Atomic radius (van der Waals): 216 pm
Ionization energy: 12.130 eV
Oxidation states: 0
Standard state: Gas
Melting point: 161.36 K
Boiling point: 165.03 K
Density: 0.005887 g/cm³
Chemical group: Noble gas
Year discovered: 1898

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