Radon (Rn)

General Properties

Symbol Rn
Atomic Number 86
Atomic Weight (222)
Group
18 (noble gases or helium family/neon family)
VIII (IUPAC), VIIIA (CAS)
Gas, Noble Gas, Nonmetal, Radioactive, Natural
Period 6
Block p

Physical Properties

Density 0.00973 g/cm3
Atomic Volume 50.5 cm3/mole
Atomic Radius 1.34 angstroms
Covalent Radius 140 pm
Crust Abundance N/A
Crystal Structure Cubic: Face centered
Color Colorless

Electrons & Oxidation

Oxidation States 0
Electrons Per Shell 2 8 18 32 18 8
Electron Configuration [Xe] 4f14 5d10 6s2 6p6
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6
Orbital Diagram
1s
↿⇂
2s
↿⇂
2p
↿⇂
↿⇂
↿⇂
3s
↿⇂
3p
↿⇂
↿⇂
↿⇂
3d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4s
↿⇂
4p
↿⇂
↿⇂
↿⇂
4d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4f
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
5s
↿⇂
5p
↿⇂
↿⇂
↿⇂
5d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
5f
 
 
 
 
 
 
 
6s
↿⇂
6p
↿⇂
↿⇂
↿⇂
6d
 
 
 
 
 
6f
 
 
 
 
 
 
 

Nuclear

Radioactive Yes
Half Life 3.823495 d
Lifetime 5.516088d
Decay Alpha Emission

Media

Planetary Bohr Model of Radon (Rn)
Lewis Dot Diagram of Radon (Rn)
Description
Colorless, odorless, tasteless, radioactive, heavy, noble gas.
Uses
Used to treat some forms of cancer.
Sources
Formed from the decay of radium in the earths crust.
Pronounciation (English)
RAY-don

Translations

Afrikaans Radon
Aragonese Radón
العربية رادون
Armãneashte Radon
asturianu Radón
azərbaycan dili Radon
български Радон
বাংলা রেডন
brezhoneg Radon
bosanski Radon
Byelorussian Радон
Cebuano Radon
čeština Radon
Chuvash Радон
Cymraeg Radó
dansk Radon
Deutsch Radon
Ελληνικά Ραδονιο
English Radon
esperanto Radono
español Radón
eesti Radoon
euskara Radona
فارسی رادون
suomi Radon
føroyskt Radon
français Radon
furlan Radon
West-Frysk Radon
Gaeilge Radón
Gàidhlig Radon
galego Radon
ગુજરાતી રેડૉનનો
Gaelg Raadon
Hakka Chinese Tûng (氡)
עברית רדון
हिन्दी रेडन
hrvatski Radon
magyar Radon
հայերեն Ռադոն
Indonesia Radon
íslenska Radon
italiano Radon
日本語 ラドン
ქართული რადონი
کٲشُر Redón
қазақ тілі Радон
한국어 라돈
Kurdish Radon
Komi Радон
kernewek Radon
кыргызча Радон
Latin Radon
Lëtzebuergesch Radon
Lombard Ràdun
lingála Lado
lietuvių Radonas
latviešu Radons
Mari Радон
Maori Radon
македонски Радон
മലയാളം റഡോണ്‍
монгол Радон
Мокшан Радон
Bahasa Melayu Radon
Malti Radon
Nahuatl Radón
Nederlands Radon
norsk Radon
Occitan Radon
ирон Радон
polski Radon
português Rádon
Runasimi Radun
română Radon
русский Радон
slovenčina Radon
slovenščina Radon
Samoan Radoni
Samogitian Raduons
shqip Radon
српски Радон
Southern Sotho Radone
svenska Radon
Kiswahili Radoni
தமிழ் ரேடோன்
Tajik Радон
ไทย เรดอน
Türkçe Radon
ئۇيغۇرچە رادون
українська Радон
o‘zbek Radon
Tiếng Việt Rađơn
Võro Radoon
中文

History

Discovered In
1900
Discovered By
Friedrich Ernst Dorn
Discovered At
Germany
Word Origin
Named after "the element radium" (radon was called niton at first, from the Latin word "nitens" meaning "shining"