Radon reacts readily with fluorine to form a solid compound, but this decomposes on attempted vaporization and its exact composition is uncertain.

[1][2] Calculations suggest that it may be ionic,[3] unlike all other known binary noble gas compounds.

The longest-lived isotope, radon-222, has a half-life of only 3.82 days, which decays by α-emission to yield polonium-218.

[1] Radon difluoride can be reduced to radon and hydrogen fluoride when heated with hydrogen gas at 500 °C.

This inorganic compound–related article is a stub.