Symbol	Rn	Atomic radius: pm	-	Fusion: kJ/Mole	2.89
Name	Radon	Ionic radius: pm	-	Boiling point: °C	-62
Atomic number	86	Electron affinity	Unst anion	Melting point: °C	-71
Atomic weight	222.0	1st  ion potential	10.75	Specific Heat Cap: J/(g K)	0.09
Classification	Noble gas	Natural form	Gas	Thermal Cond: W/(cm K)	<0.001
Configuration	[Xe]4f145d106s2p6	Crystal structure	FCC	Electrical Cond	-
Oxidation states	-	Density	9.73	Abundance: mg/kg-crust	<0.001
Electronegativity	-	Vaporization: kJ/Mole	18.1
The longest lived isotope, radon-222, was discovered in 1900 by the German chemist, Friedrich E. Dorn.			Uses - earthquake prediction, treatment of cancer