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Chemical substance record

Neon

7440-01-9Ne20.18 g/mol
ElementChEBI source record

Neon is indexed in ChEBI under CHEBI:33310, with the reported formula Ne. Use the source record and structural identifiers below to confirm the material you need. — ChEBI

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Identity & molecular properties

Source-linked values
CAS number7440-01-9ChEBI ↗
Molecular formulaNeChEBI ↗
Molar mass20.18 g/molChEBI ↗
Monoisotopic mass19.99244 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:33310ChEBI ↗

Cross-source molecular data

PubChem
Molar mass20.180 g/molPubChem ↗
Exact mass19.99244018 DaPubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

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neon atom
neon
GKAOGPIIYCISHV-UHFFFAOYSA-N
[Ne]
InChI=1S/Ne

Names & synonyms

neon

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology

Roles recorded in ChEBI

NMR chemical shift reference compound

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass
Equivalent amount
0.049554 mol

Uses 20.18 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
Ne
Neon · 1 atom
100.00%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

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Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:33310

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

NCBI PubChem · CID 23935 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.