Xenon Elemental Symbol

French German Italian Portuguese Spanish Swedish
Xénon Xenon Xeno Xênon Xenón Xenón

Xenon Bohr ModelXenon is a Block P, Group 18, Period 5 element. The number of electrons in each of Xenon's shells is 2, 8, 18, 18, 8 and its electronic configuration is [Kr] 4d10 5s2 5p6. In its elemental form xenon's CAS number is 7440-63-3. The xenon atom has a covalent radius of 140±9.pm and it's Van der Waals radius is 216.pm. Xenon is present in the atmosphere and is commercially produced as a byproduct of the separation of air into oxygen and nitrogen. Xenon was discovered and first isolated by Sir William Ramsay and Morris W. Travers  in 1898. Xenon is named from the Greek word xenon meaning foreign or strange.

Xenon compounds are considered to be toxic although xenon itself is not. Xenon information, including technical data, safety data and its high purity properties, research, applications and other useful facts are specified below. Scientific facts such as the atomic structure, ionization energy, abundance on Earth, conductivity and thermal properties are included.

  • Properties
  • Safety Data
  • Research
  • Isotopes
  • Other Elements

Xenon Properties

Symbol: Xe Melting Point: -111.74 oC, -169.132 oF, 161.41 K
Atomic Number: 54 Boiling Point: -108.099 oC, -162.578 oF, 165.051 K
Atomic Weight: 131.3 Density: 3560 (88 K) kg m-3
Element Category: noble gases Liquid Density @ Melting Point: 3.057 g·cm−3
Group, Period, Block: 18, 5, p Specific Heat: N/A
    Heat of Vaporization 12.65 kJ mol-1
CHEMICAL STRUCTURE Heat of Fusion 3.1 kJ mol-1
Electrons: 54 Thermal Conductivity: 5.65×10-3  W·m−1·K−1
Protons: 54 Thermal Expansion: N/A
Neutrons: 77 Electrical Resistivity: N/A
Electron Configuration: [Kr]5s24d105p6 Electronegativity: 2.6 (Pauling scale)
Atomic Radius: N/A Tensile Strength: N/A
Covalent Radius: 140±9 pm Molar Heat Capacity: 5R/2 = 20.786 J·mol−1·K−1
Van der Waals radius: 216 pm Young's Modulus: N/A
Oxidation States: 0, +1, +2, +4, +6, +8 (weakly acidic oxide) Shear Modulus: N/A
Phase: Gas Bulk Modulus: N/A
Crystal Structure: face-centered cubic Poisson Ratio: N/A
Magnetic Ordering: diamagnetic Mohs Hardness: N/A
1st Ionization Energy: 1170.36 kJ mol-1 Vickers Hardness: N/A
2nd Ionization Energy: 2046.45 kJ mol-1 Brinell Hardness: N/A
3rd Ionization Energy: 3099.42 kJ mol-1 Speed of Sound: (liquid) 1090 m/s; (gas) 169 m·s−1
CAS Number: 7440-63-3 Abundance in typical human body, by weight: N/A
ChemSpider ID: 22427 Abundance in typical human body, by atom: N/A
PubChem CID: 23991 Abundance in universe, by weight: 10 ppb
MDL Number: MFCD00083855 Abundance in universe, by atom: 0.09 ppb
EC Number: N/A Discovered By: William Ramsay and Morris Travers
Beilstein Number: N/A Discovery Date: 1898
SMILES Identifier: [Xe]  
InChI Identifier: InChI=1S/Xe Other Names: Xeno

Recent Research & Development for Xenon

  • Benhai Yu, Shasha Jia, Dongling Zhang, Qingbin Tang, Nonsequential double ionization of xenon by linearly and elliptically polarized ultra-short laser pulses, Optics Communications, Volume 332, 1 December 2014
  • N.S. Benerji, Bijendra Singh, Performance of axicon based conical resonator (ABCR) with a xenon chloride (XeCl) excimer laser, Optics Communications, Volume 331, 15 November 2014
  • H.F. Huang, J.J. Li, D.H. Li, R.D. Liu, G.H. Lei, Q. Huang, L. Yan, TEM, XRD and nanoindentation characterization of Xenon ion irradiation damage in austenitic stainless steels, Journal of Nuclear Materials, Volume 454, Issues 1–3, November 2014
  • , Xenon helps erase painful memories, New Scientist, Volume 223, Issue 2985, 6 September 2014
  • I.O. Usov, R.M. Dickerson, P.O. Dickerson, D.D. Byler, K.J. McClellan, Uranium dioxide films with xenon filled bubbles for fission gas behavior studies, Journal of Nuclear Materials, Volume 452, Issues 1–3, September 2014
  • E. Friedland, K. Gärtner, T.T. Hlatshwayo, N.G. van der Berg, T.T. Thabethe, Influence of radiation damage on xenon diffusion in silicon carbide, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 332, 1 August 2014
  • B.T. Kirby, G.T. Hickman, T.B. Pittman, J.D. Franson, Feasibility of single-photon cross-phase modulation using metastable xenon in a high finesse cavity, Optics Communications, Available online 19 June 2014
  • Yinbin Miao, Wei-Ying Chen, Aaron Oaks, Kun Mo, James F. Stubbins, The incorporation and migration of a single xenon atom in ceria, Journal of Nuclear Materials, Volume 449, Issues 1–3, June 2014
  • Lingling Ma, Zhengguo Huang, Xiqian Niu, Bohai Zhang, Qi Wang, Theoretical study on the selectivity of the insertion xenon atom into hypohalous acids, Inorganica Chimica Acta, Volume 414, 1 April 2014
  • M. Akel, S. Alsheikh Salo, S. Saboohi, C.S. Wong, Xenon plasma as a potential source for EUV and soft X-ray radiations: Numerical experiments, Vacuum, Volume 101, March 2014

Xenon Isotopes

Naturally occurring xenon (Xe) has eight stable isotopes: 124Xe, 126Xe, 128Xe, 129Xe, 130Xe, 131Xe, 132Xe, and 134Xe

Nuclide Symbol Isotopic Mass Half-Life Nuclear Spin
124Xe 123.905893 Observationally Stable 0+
126Xe 125.904274 Observationally Stable 0+
128Xe 127.9035313 Stable 0+
129Xe 128.9047794 Stable 1/2+
130Xe 129.9035080 Stable 0+
131Xe 130.9050824 Stable 3/2+
132Xe 131.9041535 Stable 0+
134Xe 133.9053945 Observationally Stable 0+