• Class: Inert Gases
• Period: 5
• IUPAC group: 18
• Traditional: 0

• Discovered in: 1898 by Ramsay, Travers
• Origin of name: Greek: Xenon, (stranger)
• Historical or alternate name:

Air to the extent of 1 part in 20,000,000

Colorless, odorless gas. Primarily inert; reacts with Fluorine.

• Atmosphere: 0.086 ppm
• Primitive mantle: ~0.0 ppm
• Sea water: 4.7e-5 ppm
• Metallic meteorite: 8.6 ppm
• ConTinental crust: 2.0E-6 ppm
• Solar photosphere: ~0.0 log of abundance
• Oceanic crust: ~0.0 ppm
• Solar system: 4.35 relative to Si=1.0e6

   Hazards

Inert nonflammable gas. Asphyxiant..

• Lower:
• Upper:

Xenon Physical Properties

 Transitional Data

• State: Gas
• Density: 5.887 g/L

 Molar enthalpy

• Atomization: 0.0 kJ mol-1
• Fusion: 3.10 kJ mol-1
• Vaporization: 12.65 kJ mol-1

 Transition points

• MelTing point: 161.3 K
• Boiling point: 166.1 K
• Critical temperature: 289.73 K

 Molar properties

• Atomic weight: 131.29 g/mole
• Molar volume: 33.003 cm3 mol-1

 Crystal structure sequence

face-centered-cubic

 Thermodynamics

• State: gas
  • Enthalpy 0
  • Gibbs function 0
  • Entropy 169.683
  • Heat Capacity 20.786

 Miscellaneous physical

• Electrical resistivity: µ-ohms/cm
• Debye temperature: 64.0 K
• Thermal conductivity: 0.0056 W / m / K
• Coefficient of linear expansion: Coef. per K
• Mass magnetic susceptibility: -4.20e-9
• X-ray diffraction mass absorption coefficients:
• CuK: 306 (µ/p)/cm2 g-1
• MoK: 39.2 (µ/p)/cm2 g-1

Xenon Chemical Properties

 Chemical basics:

• Oxidation states: 0
• Molecular wt: 131.29 g/mole

 Radii

• Covalent: 209 pm
• Atomic: 216.0 pm
• Van der Waals: pm

 Ions:

 Covalent bonds

 Effective nuclear charge

• Slater: 8.25
• Clementi: 12.42
• Froese-Fischer: 15.61

 Electronegativity

• Pauling:
• Allred-Rochow:

 Standard reactions

Xenon Nuclear Properties

• Known 31
• Listed 11

• Known 118 - 142
• Listed 124 - 136

• % Occ.:Natural 0.10%
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 0.09%
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life: 36.40 days
  • Decay mode: E.C.,
  • Source: reactor
• Notes

• % Occ.:Natural 1.91%
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 26.40%
• Mossbauer NRA: 6.34 *
• Nuclear spin/Quantum no.: 1/2
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 4.10%
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 21.20%
• Mossbauer NRA: 12.80
• Nuclear spin/Quantum no.: 3/2
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 26.90%
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life: 5.25 days
  • Decay mode: Beta-
  • Source: reactor
• Notes med

• % Occ.:Natural 10.40%
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 8.90%
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• Isotope Cross-section 24.5 barns

• Absolute sensitivity: 5.60e-3 1H=1.0
• Relative sensitivity: 2.12e-2 1H=1.0
• Receptivity: 31.8 13C=1.0
• Magnetogyric ratio: -7.4003e7 rad / T / s
• Quadropole moment: m2
• Frequency: 27.660 MHz
• Reference: XeOF4

Xenon Energy Properties

Electrons

• Ground state electron configuration: [Kr] 4d10 5s2 5p6
• Electron affinity: -41 kJ mol-1
• Filling orbitals:

 Ionization energies

 Atomic energy levels