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Atomic Number	86

Atomic Symbol	Rn

Atomic Weight	[222 amu]

Group	Noble Gas, 18

Form	Gas

Density @ STP	9.741 g/L

Melting Point	-71 °C (-95.8 °F, 202.15 °K)

Boiling Point	-61.7 °C (-79.06 °F, 211.45 °K)

Heat of Fusion	3 kJ/mol

Heat of Vaporization	17 kJ/mol

First Ionization Potential	10.74850 eV

Specific Heat Capacity	0.094 J/g K

Ground State Electron Configuration	5d¹⁰ 6s² 6p⁶

Oxidation State(s)	0

Selected Radioisotopes	²²²Rn

Atomic Radius	120 pm

Discovered by	Dorn, 1900