Technical data for Neon

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 Point24.56 K
Absolute Boiling Point27.07 K
Critical Presure2.76 MPa (27.24 Atm)
Critical Temperature44.4 K
Heat of Fusion0.34 kJ/mol
Heat of Vaporization1.75 kJ/mol
Heat of CombustionN/A
Specific Heat1030 J/(kg K)[note]
Adiabatic Index5/3
Thermal Conductivity0.0491 W/(m K)
Thermal ExpansionN/A

Bulk physical properties
Density0.9 g/l[note]
Density (Liquid)N/A
Molar Volume0.02242
Refractive Index1.000067
Speed of Sound936 m/s
Thermal Conductivity0.0491 W/(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

Classifications
Alternate NamesNone
Nams of AllotropesNone
Blockp
Group18
Period2
Electron Configuration[He]2s22p6
ColorColorless
Discovery
1898 in United Kingdom
Gas phaseMonoatomic
CAS NumberCAS7440-01-9

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
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.