کينډۍ:Infobox radon

Radon,  ₈₆Rn

Spectral lines of radon
عمومي خواص
Pronunciation	/ˈreɪdɒn/ RAY-don
Appearance	colorless gas, occasionally glows green or red in discharge tubes
Radon په دوراني جدول کې
Xe ↑ Rn ↓ Og astatine ← radon → francium ‍
اټومي شمیره (Z)	86
گروپ, پیریود	group 18 (noble gases), period 6
بلاک	p-block
Element category	noble gas
Mass number	222 (most stable isotope)
Electron configuration	[Xe] 4f14 5d10 6s2 6p6
Electrons per shell	2, 8, 18, 32, 18, 8
فزیکي خواص
حالت (at STP)	گاز
دويلې کيدو ټکى	202 K ​(−71 °C, ​−96 °F)
يشنا ټکی	211.5 K ​(−61.7 °C, ​−79.1 °F)
کثافت (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
Heat of vaporization	18.10 kJ/mol
Molar heat capacity	5R/2 = 20.786 J/(mol·K)
Vapor pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 110 121 134 152 176 211
اټومي خواص
Oxidation states	6, 2, 0
Electronegativity	Pauling scale: 2.2
Ionization energies	1st: 1037 kJ/mol
Covalent radius	150 pm
Van der Waals radius	220 pm
Miscellanea
Crystal structure	​face-centered cubic (fcc) Face-centered cubic crystal structure for radon
د تودوخې تېرېدنه	3.61کينډۍ: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
آيسو­ټوپ Abun­dance نیم ژوند (t1/2) Decay mode Pro­duct 210Rn syn 2.4 h α 206Po 222Rn trace 3.8235 d α 218Po 224Rn syn 1.8 h β− 224Fr

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