Neon

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

Neon (Ne) is chemical element 10, a noble gas in group 18, period 2 (PubChem).

Atomic number: 10
Symbol: Ne
Group: 18
Period: 2
Atomic mass: 20.180 u
Electron configuration: [He]2s2 2p6
Atomic radius (van der Waals): 154 pm
Ionization energy: 21.565 eV
Oxidation states: 0
Standard state: Gas
Melting point: 24.56 K
Boiling point: 27.07 K
Density: 0.0008999 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