Template:Infobox radon

Radon,  ₈₆Rn

General properties
Pronunciation	Template:Infobox element/pronunciation
Appearance	colorless gas
Standard atomic weight (Ar, standard)	Template:Infobox element/standard atomic weight
Mass number	Template:Infobox element/symbol-to-most-stable-isotope (most stable isotope)
Radon in the periodic table
Template:Infobox element/periodic table
Atomic number (Z)	86
Group	Template:Infobox element/group
Period	period 6
Block	p-block
Element category	Template:Infobox element/category format
Electron configuration	[Xe] 4f14 5d10 6s2 6p6
Electrons per shell	2, 8, 18, 32, 18, 8
Physical properties
Phase at STP	gas
Melting point	202 K ​(−71 °C, ​−96 °F)
Boiling point	211.5 K ​(−61.7 °C, ​−79.1 °F)
Density (at STP)	9.73 g/L
when liquid (at b.p.)	4.4 g/cm3
Critical point	377 K, 6.28 MPa
Heat of fusion	3.247 kJ/mol
[[Enthalpy of vaporization|Heat of Template:Engvar]]	18.10 kJ/mol
Molar heat capacity	5R/2 = 20.786 J/(mol·K)
[[Vapor pressure|Template:Engvar pressure]] Template:Infobox element/vapor pressure table
Atomic properties
Oxidation states	Template:Infobox element/symbol-to-oxidation-state
Electronegativity	Pauling scale: 2.2
[[Ionization energy|Template:Engvar energies]]	1st: 1037 kJ/mol
Covalent radius	150 pm
Van der Waals radius	220 pm
Template:Infobox element/spectral lines
Other properties
Crystal structure	​Template:Infobox element/crystal structure Template:Infobox element/crystal structure
Thermal conductivity	3.61Template:E  W/(m·K)
Magnetic ordering	non-magnetic
CAS Number	10043-92-2
History
Discovery	Ernest Rutherford and Robert B. Owens (1899)
First isolation	William Ramsay and Robert Whytlaw-Gray (1910)
Main isotopes of radon
Template:Infobox element/isotopes table