Atomic Number 86     Mass Number of Most Important Isotope (222)

State gas     Color colorless     Electronegativity 0.7

Melting Point -71°C     Boiling Point -61.8°C

No Natural Isotopes

Abbreviated Electron Configuration [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁶

Discovered by Friedrich Ernst Dorn in 1900.