Element Neon

Neon ElementIt is a chemical element with the symbol Ne and atomic number 10. It is a noble gas.
Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. It was discovered (along with krypton and xenon) in 1898 as one of the three residual rare inert elements remaining in dry air, after nitrogen, oxygen, argon and carbon dioxide were removed.
Neon was the second of these three rare gases to be discovered and was immediately recognized as a new element from its bright red emission spectrum. The name neon is derived from the Greek word, νέον, neuter singular form of νέος (neos), meaning new.

Names and Identifiers

Chemical Formula:Ne
CAS:7440-01-9
Molecular Weight:20.17970g/mol
EC Number :231-110-9
MDL Number:MFCD00011136
Color:colorless
Other Names:Neon
PubChem CID:23935
IUPAC Name:Neon
Inchl:InChI=1S/Ne
InChI Key:GKAOGPIIYCISHV-UHFFFAOYSA-N
Canonical SMILES:[Ne]
ICSC Number:0627

Physical & Chemical Properties

Phase:Gas
Density:1.207 g/cm³
Boiling Point:27.104 K ​(−246.046 °C, ​−410.883 °F)
Melting Point:24.56 K ​(−248.59 °C, ​−415.46 °F)
Molecular Formula:Ne
Flash Point:n/a
Exact Mass:19.99240
Symbol:Globally Harmonized System of Classification
Signal Word:Danger
Hazard Statements:H280
Precautionary Statements:n/a
Hazard Codes:n/a
Risk Phrases:n/a
Safety Phrases:S38
RIDADR:UN 1065 2.2
WGK Germany:3
RTECS:QP4450000
Packaging Group:n/a
Hazard Class:2.2

The three Neon isotopes are used for various purposes. Ne-22 is used for the production of the medical radioisotope Na-22. Ne-20 can be used for the production of F-18, although the route via O-18 is by far the most commonly used. Ne-21 has been used in Masers to study quantum physics.

Naturally occurring isotopes

IsotopeMass/DaNatural abundance (atom %)Nuclear spin (I)Magnetic moment (μ/μN)
20Ne19.9924356 (22)90.48 (3)00
21Ne20.9938428 (21)0.27 (1)3/2-0.661796
22Ne21.9913831 (18)9.25 (3)00

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
18Ne18.0057101.67 sEC to 18F0
19Ne19.00188017.22 sEC to 19F1/2-1.885
23Ne22.99446537.2 sβ to 23Na3/2-1.08
24Ne23.9936133.38 mβ to 24Na0
25Ne24.997690.61 sβ to 25Na1/2

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