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Technical data for Neon

Click any property name to see plots of that property for all the elements.

Overview
NameNeon
SymbolNe
Atomic Number10
Atomic Weight20.1797
Density0.9 g/l[note]
Melting Point-248.59°C
Boiling Point-246.08°C

Thermal properties
PhaseGas
Melting Point-248.59°C
Boiling Point-246.08°C
Absolute Melting Point24.56K
Absolute Boiling Point27.07K
Critical Pressure2.76MPa (27.24Atm)
Critical Temperature44.4K
Heat of Fusion0.34KJ/mol
Heat of Vaporization1.75KJ/mol
Heat of CombustionN/A
Specific Heat1030.J/(Kg K)[note]
Adiabatic Index5/3
Neel PointN/A
Thermal Conductivity0.0491W/(m K)
Thermal ExpansionN/A

Bulk physical properties
Density0.9 g/l[note]
Density (Liquid)N/A
Molar Volume0.02242
Brinell HardnessN/A
Mohs HardnessN/A
Vickers HardnessN/A
Bulk ModulusN/A
Shear ModulusN/A
Young ModulusN/A
Poisson RatioN/A
Refractive Index1.000067
Speed of Sound936.m/s
Thermal Conductivity0.0491W/(m K)
Thermal ExpansionN/A

Reactivity
Valence0
ElectronegativityN/A
ElectronAffinity0.KJ/mol
Ionization Energies
2080.7, 3952.3, 6122., 9371., 12177., 15238., 19999., 23069.5, 115379.5, 131432. KJ/mol

Health and Safety
Autoignition PointN/A
FlashpointN/A
Heat of CombustionN/A
DOT Hazard Class2.2
DOT Numbers1913
EU NumberEU231-110-9
NFPA Fire RatingN/A
NFPA HazardsN/A
NFPA Health RatingN/A
NFPA Reactivity RatingN/A
RTECS Classes
Other
RTECS NumberRTECSQP4450000
NFPA LabelN/A

Classifications
Alternate NamesNone
Names of AllotropesNone
Blockp
Group18
Period2
Electron Configuration[He]2s22p6
ColorColorless
Discovery
1898 in United Kingdom
Gas phaseMonoatomic
CAS NumberCAS7440-01-9
CID NumberCID23935
Gmelin NumberGmelin16211
NSC NumberN/A
RTECS NumberRTECSQP4450000

Electrical properties
Electrical TypeN/A
Electrical ConductivityN/A
ResistivityN/A
Superconducting PointN/A

Magnetic properties
Magnetic TypeDiamagnetic
Curie PointN/A
Mass Magnetic Susceptibility-4.1×10-9
Molar Magnetic Susceptibility-8.27×10-11
Volume Magnetic Susceptibility-3.69×10-9

Abundances
% in Universe0.13%
% in Sun0.1%
% in MeteoritesN/A
% in Earth's Crust3.×10-7%
% in Oceans1.2×10-8%
% in HumansN/A

Atomic dimensions and structure
Atomic Radius38.pm
Covalent Radius69.pm
Van der Waals Radius154.pm
Crystal StructureFace Centered Cubic
Lattice Angles
π/2, π/2, π/2
Lattice Constants
442.9, 442.9, 442.9 pm
Space Group NameFm_ 3m
Space Group Number225

Nuclear Properties
Half-LifeStable
LifetimeStable
Decay ModeN/A
Quantum Numbers1S0
Neutron Cross Section0.04
Neutron Mass Absorption0.0006
Known Isotopes
16Ne, 17Ne, 18Ne, 19Ne, 20Ne, 21Ne, 22Ne, 23Ne, 24Ne, 25Ne, 26Ne, 27Ne, 28Ne, 29Ne, 30Ne, 31Ne, 32Ne, 33Ne, 34Ne
Stable Isotopes
20Ne, 21Ne, 22Ne
Isotopic Abundances
20Ne90.48%
21Ne0.27%
22Ne9.25%


Notes on the properties of Neon:

Density: Density at 0° Celsius.

Specific Heat: Value given for gas phase.

Up to date, curated data provided by Mathematica's ElementData function from Wolfram Research, Inc.

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