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Technical data for Xenon

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

Overview
NameXenon
SymbolXe
Atomic Number54
Atomic Weight131.293
Density5.9 g/l[note]
Melting Point-111.8 °C
Boiling Point-108 °C

Thermal properties
PhaseGas
Melting Point-111.8 °C
Boiling Point-108 °C
Absolute Melting Point161.3 K
Absolute Boiling Point165.1 K
Critical Pressure5.841 MPa (57.65 Atm)
Critical Temperature289.77 K
Heat of Fusion2.3 kJ/mol
Heat of Vaporization12.64 kJ/mol
Heat of CombustionN/A
Specific Heat158.32 J/(kg K)[note]
Adiabatic Index5/3
Neel PointN/A
Thermal Conductivity0.00565 W/(m K)
Thermal ExpansionN/A

Bulk physical properties
Density5.9 g/l[note]
Density (Liquid)N/A
Molar Volume0.0223
Brinell HardnessN/A
Mohs HardnessN/A
Vickers HardnessN/A
Bulk ModulusN/A
Shear ModulusN/A
Young ModulusN/A
Poisson RatioN/A
Refractive Index1.000702
Speed of Sound1090 m/s
Thermal Conductivity0.00565 W/(m K)
Thermal ExpansionN/A

Reactivity
Valence6
Electronegativity2.6
ElectronAffinity0 kJ/mol
Ionization Energies
1170.4, 2046.4, 3099.4 kJ/mol

Health and Safety
Autoignition PointN/A
FlashpointN/A
Heat of CombustionN/A
DOT Hazard Class2.2
DOT Numbers2591
EU NumberEU231-172-7
NFPA Fire RatingN/A
NFPA HazardsN/A
NFPA Health RatingN/A
NFPA Reactivity RatingN/A
RTECS NumberRTECSZE1280000
NFPA LabelN/A

Classifications
Alternate NamesNone
Names of AllotropesNone
Blockp
Group18
Period5
Electron Configuration[Kr]4d105s25p6
ColorColorless
Discovery
1898 in United Kingdom
Gas phaseMonoatomic
CAS NumberCAS7440-63-3
CID NumberCID23991
Gmelin NumberGmelin1125
NSC NumberN/A
RTECS NumberRTECSZE1280000

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

Magnetic properties
Magnetic TypeDiamagnetic
Curie PointN/A
Mass Magnetic Susceptibility-4.3×10-9
Molar Magnetic Susceptibility-5.65×10-10
Volume Magnetic Susceptibility-2.54×10-8

Abundances
% in Universe1×10-6%
% in SunN/A
% in MeteoritesN/A
% in Earth's Crust2×10-9%
% in Oceans5×10-10%
% in HumansN/A

Atomic dimensions and structure
Atomic Radius108 pm
Covalent Radius130 pm
Van der Waals Radius216 pm
Crystal StructureFace Centered Cubic
Lattice Angles
π/2, π/2, π/2
Lattice Constants
620.23, 620.23, 620.23 pm
Space Group NameFm_ 3m
Space Group Number225

Nuclear Properties
Half-LifeStable
LifetimeStable
Decay ModeN/A
Quantum Numbers1S0
Neutron Cross Section25
Neutron Mass Absorption0.0083
Known Isotopes
110Xe, 111Xe, 112Xe, 113Xe, 114Xe, 115Xe, 116Xe, 117Xe, 118Xe, 119Xe, 120Xe, 121Xe, 122Xe, 123Xe, 124Xe, 125Xe, 126Xe, 127Xe, 128Xe, 129Xe, 130Xe, 131Xe, 132Xe, 133Xe, 134Xe, 135Xe, 136Xe, 137Xe, 138Xe, 139Xe, 140Xe, 141Xe, 142Xe, 143Xe, 144Xe, 145Xe, 146Xe, 147Xe
Stable Isotopes
124Xe, 126Xe, 128Xe, 129Xe, 130Xe, 131Xe, 132Xe, 134Xe, 136Xe
Isotopic Abundances
124Xe0.09%
126Xe0.09%
128Xe1.92%
129Xe26.44%
130Xe4.08%
131Xe21.18%
132Xe26.89%
134Xe10.44%
136Xe8.87%


Notes on the properties of Xenon:

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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