xenon

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Symbol:

Xe

Atomic Number:

54

Relative Atomic Mass:

131.29 g mol^-1

Natural Abundance in Lithosphere, hydrosphere and atmosphere:

2 x 10^-9% (mass fraction)

Electron Configuration:

[Kr]4d¹⁰5s²5p⁶

Oxidation States:

VI, IV, II

Van der Waals Radius:

210pm

Boiling Point:

-107.1°C

Density:

5.49 g L^-1 (at 1013 mbar)

First Ionisation Energy:

12.130 eV

Number of Natural Isotopes:

9

Mass Number of the Most Abundant Isotopes:

129 g mol^-1 a 26.4% abundance

131 g mol^-1 a 21.2% abundance

132 g mol^-1 a 26.9% abundance