SymbolXe
Latin nameXenon
Atomic number54
Period5
Element categoryNoble gases
Relative atomic mass131.29
GroupVIII.A
Oxidation numbers
2, 4, 6, 8
Electron configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6
Density [g/cm3]
0.0058671
State
Gas
Melting point [°C]
-111.82
Boiling point [°C]
-108.12
Critical point [°C]
16.62
Critical pressure [MPa]
5.841
Atomic radius [pm]
108
Covalent radius [pm]
130
Thermal conductivity [W m-1K-1]
0.00569
Heat capacity [J K-1g-1]
0.158
Discovery
1898
1.st ionization energy [eV]
12.1299
2.nd ionization energy [eV]
21.21
3.rd ionization energy [eV]
32.1
Stable isotopes
2
Unstable isotopes
22