General | States | Energies | Oxidation & Electrons |Appearance & Characteristics
Reactions | Other Forms |Radius | Conductivity | Abundance
Encyclopedia Britannica articles


Name Radon Symbol Rn
atomic number 86 Atomic weight (222)
Density @ 293 K 0.00973 g/cm3 Atomic volume 50.5 cm3/mol
Group Noble Gas discovered 1900


state (s, l, g) g
melting point 202.2 K boiling point 211 K
Heat of fusion 2.890 kJ/mol Heat of vaporization 16.40 kJ/mol
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1st ionization energy 1037 kJ/mole electronegativity
2nd ionization energy kJ/mole electron affinity kJ/mole
3rd ionization energy kJ/mole Specific heat 0.09 J/gK
heat atomization 0 kJ/mole atoms

Oxidation & Electrons

Shells 2,8,18,32,18,8 electron configuration [Xe] 4f14 5d10 6s2 6p6
minimum oxidation number 0 maximum oxidation number 0
min. common oxidation no. 0 max. common oxidation no. 0
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Appearance & Characteristics

structure color colorless
uses earthquake prediction toxicity
hardness mohs characteristics Radioactive,air pollutant


reaction with air none reaction with 6M HCl none
reaction with 6M HCl none reaction with 15M HNO3 none
reaction with 6M NaOH none
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Other Forms

number of isotopes 0 hydride(s)
oxide(s) chloride(s)


ionic radius (2- ion) pm ionic radius (1- ion) pm
atomic radius pm ionic radius (1+ ion) pm
ionic radius (2+ ion) pm ionic radius (3+ ion) pm
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thermal conductivity 0 J/m-sec-deg electrical conductivity 0 1/mohm-cm
polarizability 5.3 A^3


source Synthetic(Ra-226 decay) rel. abund. solar system log
abundance earth's crust -12.4 log cost, pure $/100g
cost, bulk $/100g
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World Wide Web presentation of Chemicool Periodic Table is © Copyright 1996-99 by David D. Hsu. Some data were provided by and used with the permission of JCE Software and is owned and copyright by the Division of Chemical Education, Inc. Additional data were provided by Perkin-Elmer through Peter Lykos of IIT. The information may not be redistributed without the permission of David Hsu or JCE Software.