Comparison of Krypton and Radon

Attribute	Radon ×	Krypton ×
Standard state	Gas	Gas
Electron configuration	[Xe]6s²4f¹⁴5d¹⁰6p⁶	[Ar]4s²3d¹⁰4p⁶
Atomic mass (u)	222.01758	83.8
Electronegativity (pauling scale)	-	3
Oxidation states	0	0
Ionization energy (eV)	10.745	14
Atomic radius (van der waals) (pm)	220	202
Boiling point (K)	211.45	119.93
Melting point (K)	202	115.79
Density (g/cm³)	0.00973	0.003733
Atomic number	86	36
Group name	Noble gas	Noble gas
Symbol	Rn	Kr
Discovered (year)	1900	1898