NO. 054Noble Gas

Xe

Xenon

Xenon is a noble gas used in high-intensity lamps, anesthesia, and ion propulsion systems.

Crystal Structure

Face-centered cubic (fcc)

Atomic Mass131.29 u

Density0.0059 g/cm³

Melting Point161 K

Boiling Point165 K

Atomic Radius108 pm

Electronegativity2.6

Ionization Energy1170 kJ/mol

Electron Affinity0 kJ/mol

Bonding TypeCovalent

Oxidation States0, 2, 4, 6

Acid/BaseNeutral

ReactivityLow

Electron Configuration

[Kr] 4d10 5s2 5p6

Discovered ByWilliam Ramsay

Year1898

Known Isotopes

Xe-124Xe-126Xe-128Xe-129Xe-130Xe-131Xe-132Xe-134Xe-136